Kitty litter

A litter box, sometimes called a sandbox, litter tray, litter pan, or catbox, is an indoor feces and urine collection box for cats (as well as rabbits, ferrets, micro pigs small dogs such as Beagles and Chihuahuas, and other pets that instinctively or through training will make use of such a repository) that are permitted free roam of a home but who cannot or do not always go outside to relieve themselves. Many owners of these animals prefer not to let them roam outside for fear that they might succumb to outdoor dangers, such as weather, wildlife or traffic (it has been claimed indoor cats, on average, live ten years longer than outdoor cats). A litter box makes it possible to shelter pets from these risks.

In the wild, cats naturally excrete in soft or sandy soil for easy burial. They use their paws in a backward sweeping motion to cover their feces. To stimulate this instinctive desire, a litter box's bottom is filled typically with an inch (2.5 cm) or more of cat litter. Litter box filler is a loose, granular material that absorbs moisture and odors such as ammonia. Some litter brands contain baking soda to absorb such odors. The litter material also satisfies a cat's instinctive desire to use an easily dug material. The most common material is clay, although recycled paper "pellets" and silica-based "crystal" variants are also used. Sometimes, when an owner wishes to stimulate the cat's natural instincts, natural dirt is used.

One of the first commercially available cat litters in the United States of America was Kitty Litter, available in 1947 and marketed by Ed Lowe. This was the first large-scale use of clay (in the form of Fuller's earth) in litter boxes; previously sand was used. Clay litter is much more absorbent than sand and is manufactured into large grains or clumps of clay to make it less likely to be tracked from the litter box. The brand name Kitty Litter has become a genericized trademark, used by many to denote any type of cat litter. Today, cat litter can be obtained quite economically at a variety of retail stores. Conventional clay litter is indistinguishable from clay-based oil absorbent (used to clean oil spills); as the latter is far less expensive, it is often used as a substitute. Non-clumping cat litter is often made of zeolite, diatomite and sepiolite.

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