Most people I know use regular clumping cat litter, but I just read an article on cats.about.com that makes me a little worried about the clay that most clumping litters use. In, "To Scoop or Not to Scoop," About.com's Franny Syufy writes:
"The arguments for potential hazards to pets of using clumping clay with sodium bentonite certainly sound logical:
- Cats inhale dust from clay litter, or ingest it while cleaning their feet. Kittens, being curious creatures, sometimes eat litter.
- The powerful clumping abilities of sodium betonite cause the ingested clay dust and particles which, when combined with natural and ingested liquid form a solid mass.
- Inhaled particles could cause similar problems in the moist climate of the lungs. (The dust in clay is silica dust, which is not particularly friendly to either human or feline lungs.)
- The 'clumping activity' in the intestines could draw fluid out of the body, causing dehydration, and possibly consequential urinary tract problems."
The folks at my office mostly use traditional clay clumping litters and say they haven't had a problem. One of my coworkers was raving about Arm & Hammer Crystal Blend, saying that it has the best scooping action.
However, another one of my coworkers recommends litter crystals. Interesting.
Bottom Line: I want the least smell and the easiest to clean, but I'd feel pretty bad if it caused health problems for my cats.