Feline Pine gets some of the best reviews among biodegradable cat litters. Another biodegradable litter that receives mostly positive reviews is World's Best Cat Litter (*Est. $40 for 34 lbs.). In a way, this litter provides the best of both worlds. Unlike regular Feline Pine, it clumps on contact with cat urine, so the litter box is easier to clean. Plus, World's Best is made out of corn kernels rather than clay. Many owners and experts swear by this cat litter, but there are also some complaints about its price, and some users say it's dustier than the manufacturer claims. As with Feline Pine, however, the fact remains that many cats that are set in their ways will refuse to switch. Because of the large grains, World's Best is safe for small kittens that should not use fine-grained clay kitty litter yet. World's Best Cat Litter Extra Strength Formula (*est. $40 for 34 lbs.) is also available for people who need stronger odor control for multiple cats. User reviews on Amazon.com are mostly favorable, although a few say it has an objectionable odor of its own and does not control pet odor as much as they had hoped it would.
Although cat owners and experts recommend Feline Pine and World's Best Cat Litter most often as the best biodegradable cat litter, they do not nearly exhaust the long list of organic kitty litters. As editors at Cats International lament, "The multimillion-dollar cat litter industry has produced an astounding array of litter substrates made of a variety of unlitter-like compounds such as paper, corncob, orange peel, wheat, wood, grass, silica and peanut shell."
Purina Yesterday's News Original Formula (*Est. $16 for 30 lbs.) receives some favorable reviews. As its name hints, this cat litter is made out of recycled newspapers, which are condensed into super-absorbent, unscented pellet-sized pieces. We find the most favorable comments for this cat litter among mouse and ferret owners, implying that its largish pellets may not be a favorite of cats. One owner posting on Petco.com says, "the only way [my cat] will use it is when confined to a room, and then I had to add a small amount of her regular litter." This cat litter is also available in another version, Yesterday's News Softer Texture (*Est. $9 for 13.2 lbs.), which has softer pellets that feel more like clay. It can be purchased scented or unscented. A couple of users at Amazon.com rate this cat litter highly. One says her cat switched to it after a day or two of transition.
Swheat Scoop (*Est. $23 for 25 lbs.) also scores some recommendations as the best biodegradable cat litter. This clumping litter is made out of wheat kernels and, like other organic cat litters, it can be flushed down the toilet or recycled in yard mulch. The reason Swheat Scoop is not included in ConsumerSearch Fast Answers is that it does not attract the uniformly high ratings of Feline Pine or World's Best and, as with Yesterday's News, some owners seem to admire this cat litter more as a matter of principle than for its actual effectiveness. Also available is Swheat Scoop Multi-Cat (*Est. $27 for 25 lbs.), which is designed to clump faster than the original. Blogger Kate Benjamin at ModernCat.net recommends it if you like Swheat Scoop, but she says it still has a lot of dust.
It is instructive to visit the cat litter message board at the environmental site Treehugger.com. Here, you can feel the tension among consumers who are eager to find an alternative to clay but are even more eager to do good by their cats. As one owner laments about her experiences with organic kitty litter: "My cat is 14 and I feel it's not fair to keep switching litter on him at this point in his life. So I've gone back to the clay." This pet owner balances her kitty litter decision by finding other ways to help the environment and reduce waste.