I use one that I get from Walmart because it can be washed (or flushed) into the sewer system. I wash all of my litter boxes ever week (to contain the smell), so that was something that was very important.

One of the problems with the clumping clay cat litter is when you have kittens (because they are most likely to eat it). Once a cat reaches about a year old you should be fine with any kind of litter.

If you are worried then maybe you should try the Feline Pine litter. This is available at Walmart and a generic form is available from Petsmart. All you have to do is scoop out the solids and a litter box will last a couple of weeks in between changings.

Good luck getting a new kitty and make sure to give us pictures.

Cheryl and the Gang (Emily, Tanner, and Charlie)