Cat litter is a material used in a litter box to absorb moisture and control odors from a cat's waste. It typically comes in various forms, including clay, crystal, and biodegradable options. The primary purpose of cat litter is to provide a clean and comfortable space for cats to relieve themselves. Most cat litter absorbs urine and clumps together, making it easier to scoop out waste. Regular cleaning and changing of the litter are essential for maintaining hygiene and preventing unpleasant smells in the home. Choosing the right type of cat litter can depend on a cat's preferences and the owner's convenience.