My cat, Ce Ce, is not overweight yet I couldn’t figure out why she was wheezing after she came out of her litter box. My vet thought it was asthma, I didn’t think so but what did I know. On the advice from my vet, I tried four different types of cat litters but Ce Ce kept wheezing. After doing some research online, I began to notice that a number of articles mentioned the cons of litter containing crystalline silica. Some cat litters that contain this processed mineral can cause respiratory problems, asthma, and lung cancer in both cats AND humans. Crystalline silica dust is also a suspected carcinogen, associated with bronchitis and tuberculosis.
The two ingredients that make the litters toxic are crystalline silica & sodium bentonite. Clay-based cat litters contain crystalline silica, the main component in sand, rock and mineral ores. A possible health threat from clay-based litters is posed by silica dust, which can be kicked up and breathed in by both cats and humans. Prolonged exposure to silica dust causes silicosis, a cancerous & fatal lung disease. Silicosis creates inflammation and scar tissue formation in the lungs, reducing the body’s ability to extract oxygen from the lungs. As the disease progresses, pulmonary and cardiac impairment may occur to the point where oxygen must be supplied continuously to sustain life. Once silicosis has developed there is no cure for the disease; however, silicosis is preventable if one can reduce silica dust exposure. Although exposure to this dust is of great concern, the effects on cat owners exposed while cleaning their cat's litter box are virtually unknown. Cheery thought, isn’t it?
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These litters below do not contain clay or silica. They are all flushable & biodegradable. They all work very well and I have listed what each litter contains that makes it more desirable for both you and your pets health.
Feline Pine - made of yellow pine. My cat did not like the texture on her paws and refused to use the litterbox.
Swheat Scoop - made of processed wheat. This is my all time favorite. No odor and clumps great.
Good Mews - made of recycled paper. I did not like the odor but it clumped well.
PaPurr litter - made of recycled paper. Again, I did not like the odor, but it clumped well.
Worlds Best Cat Litter - made of corn kernels. It smells a bit odd, but clumps well.