Although Fresh Step cat litter is normally regarded as being safe for cats to use, it does contain some chemicals that could be dangerous if consumed in large amounts. The litter includes sodium bentonite, which can upset the stomach if digested, and fragrances that may irritate sensitive cats' respiratory systems. If your cat shows any symptoms of illness or discomfort, it's crucial to follow the proper litter box hygiene and disposal guidelines and to consult a veterinarian.