It is difficult for cats to excrete bentonite cat litter. Bentonite cat litter is made of soil and will not be digested and excreted after entering the cat's body. Cats will excrete it if they eat tofu cat litter, because tofu cat litter is made of tofu residue and tofu fiber. It is made to dissolve in water and can be excreted after entering the cat's body. Usually, when owners see cats eating cat litter, they should stop it in time to prevent the cat from feeling uncomfortable.