kitty litter is made from zeolite clay ...zeolite absorbs ammonias...
The kind I use is the Bentonite clay.
Types of litter box filler
Non-clumping conventional litter
One of the first commercially available cat litters was
Kitty Litter, available in 1948 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 its larger grain makes it less likely to be tracked from the litter box. The brand name
Kitty Litter has become a
genericized trademark,[sup][
where?][/sup] used by many to denote any type of cat litter. Today, cat litter can be obtained quite economically at a variety of retail stores, including "dollar" retail outlets. 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.
The cat-box that the litter is poured into can give off a bad odor. It is recommended that it is kept in an area in the home that is not used often, such as a basement or laundry room. There are special types of litter to cover or lessen the odor. They contain baking soda and odorized crystals. If kept in room with an intake vent, an air freshener may be added on the furnace filter to isolate the odor from the rest of the house.
Clumping litter
Litter clumps were first developed in the UK in the 1950s by the Fuller's Earth Union (FEU), later to become a part of Laporte Industries Ltd. The type of clumping litter developed by the FEU was
calcium bentonite, a less swelling and less sticky type than American bentonite. Subsequently in America, clumping bentonite was developed in 1984 by biochemist Thomas Nelson. Most are made from granulated
bentonite clay which clumps together when wet and forms a solid mass separate from the other litter in the box. This solid clumped material can be scooped out and disposed of without changing the entire contents of the litter box.
Clumping litter usually also contains
quartz or
diatomaceous earth (sometimes called diatomaceous silica, which causes it to be mistakenly confused with silica gel litter). Because of the clumping effect, the manufacturers usually instruct not to flush clumping litters down the toilet, because it could clog it.[sup]
[1][/sup]
Clumping clay cat litters also contain crystalline silica, or silica dust, which in California is treated as a known carcinogen under
Proposition 65.[sup]
[2][/sup] Clay litter is also criticized by the more expensive manufacturers of non-clay litter as being commonly produced in a strip mine in an environmentally degrading process.[sup]
[3][/sup]