Marilin E.
Respiratory problems
I think this is good for a once or twice test if your cat has some kind of illness. But continued use of these crystals leads to respiratory problems. My older cat started to breathe heavy and develop Athsma attacks when we used this litter. When I switched to walnut litter the attacks reduced.
Response from PrettyLitterAug 10, 2026
We appreciate your feedback, Marilin. PrettyLitter was created with cat healthcare at its core, and we remain committed to providing a product pet parents can trust. Our litter is made from non-toxic, amorphous silica. There are two different types of silica: amorphous and crystalline. Amorphous (found in PrettyLitter) is pet-safe and household friendly. Crystalline silica is toxic to cats and can produce harmful dust when inhaled. PrettyLitter’s silica gel is made specifically for cat litter and contains NO crystalline silica. More information can be found by visiting our website or help center. I hope this helps. Email us at [email protected] if you have questions or need further assistance.