Monitor your cat's health with the safer and cleaner alternative to traditional clay litter. Genius Litter is made of super absorbent, odor-trapping crystals that change colors based on the health of your cat's urine. Silica Gel Litter. Advanced Odor Control - Genius Litter traps odor and eliminates moisture, so you'll never smell your cat's business again. Monitor Your Cat's Health: The crystals change color based on the health of your cat's urine, detecting blood, alkaline levels, albumin, and abnormal PH-levels. , , Save Money, Scoop Less: Genius Litter is made with a non-clumping formula that lasts weeks longer than traditional clay litter. Only scoop the poop and refill once a month. How does silica gel work? Our silica gel crystals are made of teeny, tiny pores in each grain. This makes Genius Litter extremely absorbent, more than clay litter, so you need less of it to do the same job. Since Genius Litter absorbs so well, it means only one bag is needed to last you and your cat a whole month. This is why our bags are smaller and lighter.