C.O.T. Cats of Thrones Dissolving Cat Litter Buy our cat litter one time and one time only in most cases you will never have to buy cat litter from us (or any other litter) ever again Multiple cats will usually need more litter but not much! Cats of thrones dissolving cat litter is 100% guaranteed safe for all plumbing systems including septic tanks and RVs There will be a mess but not for long and it is much healthier for your home because there is no dust with our system!