REMINDER: Why Clay Cat Litter is Evil

Sun, Mar 6, 2011

Litter & Hygiene

If you’ve been reading Moderncat for awhile, then you know I am against clay cat litter. There are only a few issues that I feel this strongly about and that I will use the blog as a platform for. I felt like it was time for a quick reminder on the issue, plus I have some interesting new things to share with you this week related to non-clay litter options. But first — in order to preempt the comments and emails I sometimes get when this topic comes up — I want to clarify something: I’m not saying that you love your cats any less if you use clay litter. I believe that there are several reasons why people still use clay litter:

  1. Clay cat litter is readily available in every supermarket, grocery store, mass retailer, and convenience store.
  2. It is the standard, it has been used for decades, and it performs very well.
  3. It is cheap.
  4. Many cat owners are unaware of the dangers of using clay litter because no scientific studies have been done to clearly show why it is bad. People simply don’t know.

So there you have it. Availability, performance, price, and awareness. And this is all controlled by the BIG manufacturers who have huge marketing budgets and distribution channels and who have dominated the cat litter market for years. Well, things are starting to change with several new companies now producing excellent non-clay litters and some of the big manufacturers also adding non-clay litters to their line.

So let’s start with the awareness piece. Here’s a summary of why I feel that clay cat litter is bad:


  1. Clay is strip mined to produce clay cat litter.
  2. Used clumping clay cat litter NEVER biodegrades in the landfill.


  1. Clay litter contains silica, which is a known carcinogen when inhaled.
  2. Clumping clay litter contains sodium bentonite which expands to 15 times its volume and forms an INSOLUBLE mass when it contacts liquid. It does the same thing when cats ingest it as they groom themselves after using the litter box.

For more information about the dangers of clumping clay litters, please visit Marina Michaels’ website

To address the performance issue, I have to admit, non-clay litters just don’t work as well as clay. However, I feel that if you are committed to making the switch, you will find a solution that you and your cats can live with. I have one new non-clay litter to tell you about this week and you’ll have a chance to win some to try for yourself.

The other big issue is price. Because of the smaller distribution, the non-clay litters are still quite expensive, usually around $1/lb. but with more and more people buying non-clay litter, the price should come down. I have a terrific budget busting litter tip coming up later this week, so stay tuned.

Please note: I do not allow manufacturers to advertise clay litter on Moderncat, however, sometimes you may see an ad for it in Google AdWords. I try to filter these out but sometimes they come through anyway. I do not support clay litter products.

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93 Responses to “REMINDER: Why Clay Cat Litter is Evil”

  1. 51

    Looks like I’m the only one using silicate litter here. My reason ?

    “Because no scientific studies have been done to clearly show why it is bad”

    That is true of a thousand things I use on a daly basis for my cat, my son, my husband and myself. I try to maintain as healthy a living as I can, but if some things MAY BE harmful, I just ignore them to focus on things we know to be harmful for sure (and God knows they are plenty already).

    So if clay litter may produce illness… well, that’s a risk I might as well take, considering we live in a big polluted city. I’m much more preoccupied by my beloved’s health (especially in winter when she doesn’t go out as often), vaccines and feral or half-domesticated friends. While I’m sure that there are better litter options than my silicate litter, I feel like there are a million things on my priority list that I need to take care of first.

  2. 52

    Tell this all to my cat Lump. He will not use non-clay litter. If I put it in the litter box, he pees all over the bathroom floor. I have tried EVERYTHING to transition him and he doesn’t care. I’ve tried playing chicken and cleaning up the pee for MONTHS (we’re going on six months, at this point, of using World’s Best- which I don’t like, but the other three cats will actually use it) and he doesn’t care. He will NOT use anything except clay.

    As soon as this WB is out, I have to buy clay again because I am renting and I just cannot deal with bleaching the floor three times a day.

  3. 53

    I’m seriously looking forward to hearing your recommendations for non-clay litters. I keep hear good and bad things about non-clay litters that I’m hesitant to start using one of them but I’ll look into some of the recommendations others have made in the meantime.

  4. 54

    I agree that clay has down sides. However, MANY cats will simply not use the alternatives. Personally, I’ve lived w/ 2 of those. When I tried to switch (gradually) to a pelletted litter once, Gabriel expressed his dissatisfaction by urinating into the vents of a window A/C unit!!! You can imagine the smell! I had him checked-he was perfectly healthy. And when I gave him back his clumping clay, he never had another “accident” ever again. A similar thing happened when I tried to switch years later w/ another group of cats–2 went on strike. So I stick w/ clumping clay–Precious Cat (Dr. Elsey) is the one w/ the least dust and no perfumes. It’s more expensive, but it’s what I use.

  5. 55

    I use Swheat & think it works great!! I used to wear a mask when scooping out the clay litter (poor kitties didn’t have a mask, though) and now I can breathe easy :)

  6. 56
    Sophie S.

    Everyone who thinks World’s Best doesn’t work well should try the multi-cat formula. I’ve found it controls odors MUCH better than the regular formula. I used to use regular for my foster kittens and the whole room would smell, but now I use the multi-cat and it hardly smells at all.

    And yeah, the first thing they do is try to eat it–but then they figure out what it is for and stop doing that. I’d much rather they try to eat WBCL than clumping clay. Plus the Humane Society I foster for specifically says not to use clumping clay litter for foster kittens, for the very reasons outlined in this post.

  7. 57

    I use Swheat Scoop exclusively, it’s fabulous. I purchase it from Target and find it to be very affordable, as one 15 lb box lasts a long time.

    There are some products that I just do not believe in, and clay litter is definitely one of them.

  8. 58

    I’m in a quandry. If the clay litter is bad for my babies, then what is the best?

    I have to use something that is low dust, I have a cat with asthma. I prefer unscented but it is difficult to find. I have a cat who has aversion to certain litters – I’ve even tried the Dr. Elsey’s CatAttract and he still pees next to the box sometimes. He has interstitial cystitis that we’re managing – and it does not seem to be the cause of his issue. Thankfully, it’s on a linoleum floor that I can keep clean, but it’s frustrating. I’ve tried Feline Pine – he won’t use it at all, not to mention it gets tracked everywhere, then whole pieces wind up being fun for my kitten to chase about, it does not clump (just turns to dust or falls apart). I’ve tried Shweat Scoop – I hate it. It creates mud after my cats pee in it. I scoop my boxes generally twice a day, sometimes one if they aren’t heavily used, so it’s not overuse. I keep four litterboxes in my house, and cost for keeping them useful is high. I refuse to use less, I have four cats. I’ve tried five – makes no difference. My girls don’t have issues – but my boys – I have to be careful and I have yet to find a litter suitable for Elvis. Wood based litters concern me – there are oils in certain woods that are not healthy, especially for a cat with asthma.

    So tell me, what is there out there that suits all my needs?

  9. 59

    I’ve just started experimenting with the free mulch the city gives away from their tree-trimming, with a little tiny bit of feline pine mixed in for odor control.

    I noticed, when I used the city’s free mulch as soil amendment in my garden, that the feral colony that inhabits my back yard really liked this mulch to dig and poop in. I also noticed that it cut the smell and the ick factor very well, whenever they remembered to cover up.

    So … I’m doing a Trial Box inside, avoiding an expensive corporate product completely. So far, it’s working great. Doesn’t smell at all. But next time I’ll strain it first, so (a) they don’t pull the bigger chips out to use as toys, and (b) so it’s easier to strain the poops out.

    I am sure I’ll have to change it more often than I’d change the Wonder Chemical kind, but … if the bag breaks in the landfill, all that’s there is good clean mulch, on its way to becoming soil, with a little cat poop composting in it. I may even start a “slow compost pile”, so the cat poop and plant material can just compost together for six months or so. Then I’ll shovel that mixture into trenches around my trees. That grosses me out far less than the thought of it all going, encased in plastic, into the landfill.

    They track it around a bit, but a good mat under it and more frequent sweeping should fix that. (They’ve also tracked around some of the clay, so … not a huge problem.)

    Free. Low odor. Easily accepted by all the cats in the house. Wow.

  10. 60

    It took me FOREVER to transition 1 of my 3 cats from clay to World’s Best Cat Litter (multi-cat formula in black with red bag). But I love this litter and was determined… so I had 2 boxes, 1 with just WBCL and 1 with a mixture… slowly added more WBCL and less clay, and by slow, I mean it took me a year. This way, he had a choice and the others chose the WBCL box. After a while, I started keeping the WBCL box cleaner and since he was a clean box kinda guy, he started using it. For those with 1 cat, could be worth a try.

    As for money… sure, it costs more, but I also feel better about myself and my animals and the environment. Clay made me sneeze and was SO dusty… WBCL has a slight dust but smells nice (IMHO) and clumps great.

    As for other litters… my cats hated pellets, pine, newspaper, wheat, and I’m sure there are others. Went thru floor peeing issues with all those when I attempted any transition. This one, only 1 cat gave me issues and the others went right along with the change.

    Oh, and worried about change? WBCL has a free rebate program right now. And no, I am not associated with them at all, just trying to help others move AWAY from clay!! Try my tips with any other litter!! Its worth the pain to find the right litter that isn’t dangerous… in the wild, cats use dirt, sand, and such, certainly not clay!

  11. 61

    My four kitties (three 19-month-old ex-feral littermates and one 10-year-old Siamese who was my parents’ cat until they moved out of state last year) use Swheat Scoop Multi-Cat, for the simple reason that when I first adopted the youngsters I was told by many sources that clumping clay was dangerous for young kittens.

    The feral babies litter-trained themselves almost instantly and their litter habits have been 100% ever since, so I’m figuring they don’t have any problem with the texture, etc. The older ladycat (who used to be an outdoor cat when she lived with my parents) had some texture issues initially (would hang both front feet out of the box when using it and then RUN out after doing her business) but she seems to have gotten used to it now.

    Anyway, aside from wishing it clumped slightly better, I’m as happy with the Swheat Scoop as my cats seem to be. However, I can ONLY recommend the “multi-cat” variety. I don’t know what they do differently to it vs. the regular sort, but the regular Swheat Scoop definitely develops what I would term a “gas station restroom” odor after only a few uses (and I scoop all three large boxes in the house 2-3 times a day). The multi-cat seems to concentrate the nasty stuff better so that when the clumps and turds are removed the box smells fresh. And I like that there’s no perfumey scent…most of those give me a headache.

    I can’t use corn litter since one of my kitties is severely allergic to corn. Nobody seems to have a problem with the wheat, though, and I like that the bags are lighter than an equivalent volume of clay would be.

    All that said, I wouldn’t go so far as to say clay litter is EVIL. While I am not a fan of strip-mining, the “it doesn’t biodegrade!” argument doesn’t make a lot of sense to me, considering minerals are just, well, minerals. Meaning that at some point there might at least end up being a way to clean the kittywaste off the clay and reclaim the mineral content. I guess I figure that while it’s good for people who CAN use clay alternatives to do so, lots of kitties would be severely distressed if clay litter suddenly disappeared forever. You have to consider that some cats have very extreme substrate preferences.

  12. 62

    I have two cats and really hate the ordor i get when changing my cat litter,I would love try some of the new cat litter,o yea ,I am sure my cats would love it also.

  13. 63
    Carolyn G.

    Thanks so much for this information. Finally the truth is being told. Personally, I can’t stand the layer of dust from clay all over the room, and I wash my hands and face well after scooping more to get the dust off me than even for hygienic reasons. I mix pine pellets to get the cats used to something else and will eventually switch to corn, Feline Pine, or one of these new products. A litter bag spilled openoutside my garbage can weeks ago and now that the snow’s melting, there’s a slimy gray puddle that won’t go away. Yuk!

  14. 64

    I use those pine pellets that were originally marketed for use in pellet stoves. I find that the pine controls odour better than anything else I’ve used! We are 2 indoor cats and 1 human in a 1-bdrm apartment. It does track, but not as much as the corncob litter we had before. The cost is only $5.99 for a 40lb bag! I recommend it to all the cat people I know, particularly in multi-cat households and if $$ is a concern. My boys are great about using their box, but they used to complain loudly about the smell when we used other litter! :)

  15. 65
    Becky L-S

    We’ve been using Swheatscoop for many, many years. All 7 of our cats have no problems using it. It controls the odor well. I can’t recommend it highly enough.

  16. 66

    I’ve used them all – last was Close to Nature. My cats, the darlings, will try anything even accepted the hard crystals which must be awful on their feet. Close to Nature is good but in the summer the odor does get strong and it tracks everywhere. I clean the two boxes 3-4 times a day. I got tired of finding litter all over my home including on my bed. I started researching again and found Dr. Elsey’s Premium Litter – purchased a small bag, cleaned out one box and filled with this – the cats took to it immediately and the best part is no dust, very little tracking and so far does superior job on odor. I was to the point where I couldn’t stand to see the film of corn, wheat, etc. dust all over my home. Now I’ll occasionally see a little bit right where my cats leave the box and that is it. With all the other stuff, the cats where always licking their paws, I noticed they aren’t doing that as much which I think is because this doesn’t stick to their paws either. It also seems to last a lot longer than all the other litters I have tried. My cats love it and so do I. Cons – the 40 lb bag is like trying to hold a wet, greased pig when carrying it up three flights of stairs, it weighs a ton, but so far if that is all that is wrong with this, it is a small price to pay. Thanks

  17. 67

    Clay is heavy which is why it seems cheap per pound. However, if you compare litters by volume, you’ll notice that the non-clay litters are not much more expensive.

  18. 68

    This is an issue I’ve been dealing with too. I wrote about my experiences in finding a more eco-friendly cat litter on my blog here:’s-best-cat-litter/

  19. 69

    i find it so strange that no one ever says anything about NATURE’S MICRACLE CLUMPING LITTER WITH ODOR CONTROL. Reading from, i realize how bad clay litters were. So i tried World Best, Close to Nature and Pappurr all info which i got from this website. it took me over a year to finally come down to one product that i highly recommend as well as my two cats, which is Nature’s Miracle. Yes it tracks but not as bad as World’s best. it’s also made from corn, no chemicals are used and it’s all natural. i also just purchased Dyson DC35 hand held with long extension wand. i clean my cat boxes 3 times a day (before i go to work, once i get home and before i go to bed) and “dyson” my floor where cat litters usually stay around. There is no such thing as “miracle” when it comes to controlling poop odors people. when we all eliminate, it stinks too so don’t expect cats poop smell to be covered by some miracle product. Instead, clean it out at least twice a day. Laziness is what makes horrible smell :)

  20. 70
    Jason Edge

    Hello Everyone,

    My brother and I are trying to market a less expensive natural cat litter. It is comparable to Worlds Best. It doesn’t clump quite as well but does clump. For $3.00 a bag less we think it is an excellent value. Please send us an email if you would like to try a bag. Mention this ad and save $2.00 off your first bag…Only $2.99 for an 8 pound bag. It is called Planet Friendly Cat Litter. We love cats and want to make a difference by providing and ecofriendly litter. Please send mail to

  21. 71
    Jen M.

    We have 8 cats. We have 8 boxes. 6 of the boxes have pine, and the cats have no problem with it at all.

    I have 1 cat that has to be continually re-trained. (Mary, it’s interesting you mentioned mulch. At my vet’s instruction, I re-trained “Ms. Picky” using mulch, and it worked really well.) The finicky cat, I found, will use the silica crystals, so I have 2 boxes with crystals in them. I don’t like the crystals either, but I figure that’s a small price to pay to get her to use a box at all!

    I’m really happy with the pine, and I’ve also had friends–who would tell me the truth–say my house does not smell like there are 8 cats living there. I usually just buy the pine from the pet store, but when I can, I use the pellets you can get for horse stalls at a feed store near where my parents live. $6 for 30 pounds? Heck, YES!

  22. 72

    Thank you! I’ll be testing these over the next month: Swheat Scoop Original Natural Wheat Litter and World’s Best Cat Litter. I tried and liked the Pine pellets, but those little pellets jump out and roll everywhere. :)

  23. 73

    Dear people,

    toilet train you cats! safe for cats, good for the environment and great for your wallets! I hated cleaning up the smelly litter and I decided to toilet train my cat and it WORKED and now I’m a happy cat owner who only needs one push of a button and everything is clean again!

  24. 74

    I’ve had my girl for 13 years and I’ve been on the kitty litter roller coaster for that same amount of time.

    1. I stopped using clay because of the health issues and because back then, it didn’t clump and was more of a mess.

    2.I started and stopped using the pine stuff because it’s a mess and stinks when there’s pee on it. And it’s just too pricey.

    3. I tried the little silica crystals and after she got sick for no reason – and after I read a few horror stories of what silica crystals do if ingested – and after stepping on a few crystals with bare feet (ouch) – and after realizing there aren’t enough studies to tell if silica crystals are actually safe to use , I stopped with that stuff too.

    4. I moved on to corn based litter and that was A. a mess and B. smelled HORRIBLE when there was pee on it.

    5. I tried World’s Best but am VERY VERY MAD at them. A. The grain they use has bugs in it. Grain beetles to be exact. After using World’s Best for a few months I kept seeing these creepy pen head sized beetles in my kitchen cupboards, drawers and even in my sock drawer. They eat holes in your clothes FFS!!! Well I learned they were coming from the bags of World’s Best Litter… and it really is not world’s best. It’s litter – with bugs. The company also scraped their rewards program a month after I saved the “called for” 9 UPC labels. When I asked if they’d honor my labels they acted like there was never a reward program to begin with. I sent them a screen shot and told them they lost a customer. So seriously E’f “World’s Best”.

    CURRENTLY – I am back to clay because by this time I had forgotten it was unhealthy and because I’ve been through pretty much all the gimmicks and realize nothing works better than clumping clay …

    The verdict is still out – what is a good and safe litter?

  25. 75

    *** Oh also tried Yesterday’s News which was a total mess and not worth the labor and cost either.

  26. 76

    Oh and oh. I tried to toilet train but it was a disaster. I think she’s getting too old for tricks. =/

  27. 77

    Oh!! MyKinKStar .. comment #47!!!!

    GOOD POINT about MONSANTO and corn litter.
    Yuck! Put Monsanto out of business, not more IN business.

    To the rest of the posters on here, thanks for the discussions
    about cats inherently being allergic to corn. I had no idea. <3

  28. 78

    Just started using chicken feed….yes, chicken feed. Apparently “Layer Crumble” is not far off from World’s Best cat litter and costs about 60% less. The cats are using it and it seems to clump well. It’s all-natural, there is some tracking, but I’ve yet to find perfection in litter and the house smells good.

  29. 79
    Bobby Electric

    What? Clay is evil because it doesnt biodegrade? Clay actually is very good for the environment because it traps heavy metals and other poisons from the environment- So the more clay in landfills the better because it helps to trap all the poisons from our electronic waste etc- Clay attracts harmful radiation and heavy metals like a magnet- Please look up the health benefits of eating and farming bentonite clay the stuff is incredible and very important in these times when we are being bombarded by toxins and radiation

  30. 80

    When I adopted my current cat, the cat shelter recommended a litter “Wheat Sand Cat Litter” by Integrity, and I like it better than clay, pellets, or other wheat litters I’ve tried. It doesn’t have any weird chemical smell, clumps really well, and is flushable (!). I just put the litter box next to the toilet, and it’s super easy to clean it out multiple times a day, which I’m sure helps with the smell, too. You’d never know I had a cat, and I live in a small apartment.

  31. 81
    Jackie Abrams

    Try the world’s best cat litter. They sell it on Amazon, and it’s amazing. It performs just like a flushable clay litter and has an incredibly similar texture.

  32. 82
    City Kitty

    Do not, I repeat, DO NOT use Swheat Scoop or any other cat litter made from wheat, corn or other food products unless you want an infestation of worms, moths and other critters. Last week, I had to replace my carpet, four cat scratchers, a $500 Dyson vacuum cleaner and more due to an infestation of THOUSANDS of tiny meal worms that are found in wheat-based products. The infestation started in the carpet of the guest room closet where I stored my Swheat Scoop cat litter and quickly spread throughout my condo from there. Between two visits from the exterminator, replacing the carpet, vacuum, etc., Swheat Scoop cost me nearly $5,000!!!

    I use Dr. Elsey’s Precious Cat clay litter now and my cats love it!

  33. 83

    We just got our two kittens back in May of 2011. We went through a few different litters – from Arm & Hammer to World’s Best Multi Cat. The apartment still smelled like a litter box a couple days after changing the litter. Then we found Integrity 100% pure Bentonite Clay litter and it fixed everything. It clumps, it’s inexpensive, there’s minimal dust and your home won’t smell like a litter box. This stuff was a miracle solution for us. And as far as I can tell, it doesn’t have the silica. We don’t have a bag right now (just ran out this week) so I can’t check but what I’m finding online says it’s pure clay with no additives.

    It’s cheaper than A&H since we don’t have to change it or top it off as often. An $11.00 bag lasts for a month. We get it at Pet Pros – a holistic pet store. You won’t find it at any of the big chain pet stores. I can’t recommend this stuff enough.,or.r_gc.r_pw.r_cp.,cf.osb&biw=1680&bih=935&um=1&ie=UTF-8&tbm=shop&cid=8643684701201622690&sa=X&ei=Ny8NT8KsGMTTiALk0NmqBA&ved=0CEoQ8wIwAA

  34. 84

    I had no idea about the clay litter till i was on this site an just happend to come across this…an what is crazyb, i just bought my cat litter today……well im taking it back ….i will not use clay litter no more… i want to keep them healthey. thanks so much for ur articale

  35. 85

    We had an Abyssinian who in her senior years was diagnosed with a mass that was located right where her breathing passages split into the lungs. It was inoperable due to its location. While we did not have an autopsy performed, I couldn’t help but wonder if it was due to the clumping clay litter we’d used.

    We currently use World’s Best with our new cat and so far have been very pleased. No more dust, I scoop and flush every day, and while it tracks, the tracked pieces aren’t impossible to deal with if they get wet. Quite the opposite – just add a little more water and its easy to cleanup.

    Would love to potty train her but she had an accident where the foil pan got loose and won’t go near the toilet now.

  36. 86

    Yea, I don’t know about the wheat litter causing your infestation, if your in an area where that is a concern, store it in a large sealed plastic container to ensure mice or other parasites do not get into it. I have two large male cats. I have never like clay because it’s so heavy and dusty.

    I have used world’s best for years both regular, multicat and the new scented Multi-Cat. I <3 <3 the scented it's awesome but its too expensive so I use multicat. A 35# bag last me almost 2 months and cost around $35 depending on where you buy.

    My cats have never once eaten it, my friend also uses it and her dogs tried to eat it though. My dog does not try to eat it but she of course does try to eat the poop. I scoop my two boxes at least 2 times a day(yes it possible and no I am not home all day all the time, you make time for it or stop complaining about litter smells) The corn based litter does have a softer clump than the clay ones, I have my scoping skills down with this stuff and can make it last long and not break the clumps. It does not smell weird and the odor control it good.

    You cannot force cats to use litter they don't want to. If you are testing a new litter buy another box to place near or next to the other one to see if they will even use it. It is a few dollars more to try that way but worth it. If it doesn't work you can then donate the litter and box to a shelter.

  37. 87

    I just recently switched to non-clay litter and my cat and I love it. I use Swheat Scoop. I love the fact it is biodegradable and also supports Midwest farmers (I grew up on a farm in MN). I was skeptical at first if it would control litter box odor but it has performed much better than I expected. I had recently tried A&H’s new Ultralast litter. After using it 1 week, my cat became very sick throwing up several times a day. At first I thought he must have a hairball, but then I noticed pieces of the litter in his vomit. Also the perfume in Ultralast gave me horrible headaches. Since we switched to non-clay, my cat has not thrown up once and I do not have the headaches. :) Please never use Ultralast<worst cat litter I have ever tried. I will never use clay litter again. In regards to the complaint about the meal worm infestation, this could be solved by putting the unused litter in your freezer for 2-3 days. It will kill any existing worms or eggs. I do this with flour and pasta. I know it sounds inconvenient but it may be worth it.

  38. 88
    vera carvalho

    only reason i dislike clay litter is because it isn’t eco friendly, as far as the rest goes, clay litter has been used since “forever” and there is no scientific proof as wether it is harmfull or not, i have done a lot of research on the topic and the whole frenzy about the clay litter dangers seem to have come from a scary story that became viral about a kitten dying from ingesting it, and the vet that treated it didn’t even say it was because of the litter, he said it could have been the same way it could have not. either way, since young kitties like to experiment with their mouths and have runny stool often you are better off not using clay while they are young. no one seems bothered that cats are prone to developing allergies to corn and other materials the eco friendly litters use. i am currently using wood based litter and my cat, which was never interested in the clay litter, tries to eat it, sneezes from all the dust the litter has (even i, when i’m scooping am bothered by the dust) and it tracks everywhere because it is so light and hurts our feet because it is chunkier.. the only thing that makes me want to try other eco friendly litters is just that, because they are eco friendly, i am going to try another couple of brands, but honestly i am more worried about my cat developing an allergie to corn and wood derivated those eco litters use than dying from anything related to clay litter, so far it seems to be just one of those urban myths that came along because the market started to make eco friendly litter and was looking for a way to sell it.

  39. 89

    I suspect that no scientific studies have been done on the hazards of clay litters because it is very expensive to do so and not a high priority with the Fed Gov; there is so much other stuff from China that kids are putting in their mouths to “study”. Also PETA would not be happy about cats being cut open to have their digestive systems inspected etc. Face masks should be worn when working with all dusty materials even food products for the sake of lungs. I have to lock one cat out who likes to use L-box whenever i am working on it, and wait for dust to settle. People who waited for Fed Gov do study Tobacco and Asbestos probably regret it. Common sense could save a lot of tax dollars; no need for a study. Rats survive in hazardous environments by reproducing rapidly, this may be reason enough for Fed Gov not to spend the money. Is this some people’s reason to use clay litter?


  1. [...] Use a litter made from corn, wheat, pretty much anything other than clay. In addition to clay being potentially harmful to your kitty, it’s also bad for the environment, as clay is strip mined and will never biodegrade in the [...]

  2. [...] litter for my cats, just for my face. Learn more about why clay litter is not recommended for cats here. If you’re looking for an amazing non-clay, clumping kitty litter that kicks some serious [...]

  3. [...] I haven’t had a cat for very long – only about 8 months now, and I wasn’t aware until very recently how bad most kitty litters are. Most clumping litter is made from clay, which is terrible for your cat, you, and the environment. For us humans, inhaling the dust is no good, and for the cat, if it ingests any of the litter, it swells up inside their bodies and they are pretty much storing away cancerous goods. And as for the environment, strip mining is not the best.* [...]

  4. [...] 2. Avoid clumping cat litter. My cats (RIP) used clumping cat litter. It is bad. Not only does it contain silica, which is a carcinogen when inhaled (and you know how the cats can kick up that litter dust), but clumping cat litter also contains sodium bentonite which clumps up to 15 times it’s size. Think of that non-biodegradable yuck hanging out in the landfills. Read more about it on Moderncat. [...]

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