What type cat litter tracks the least? I have Arm & Hammer clumping litter. If my cat gets wet and then goes into litter box (he loves getting in the shower):cool: , litter sticks to his hair and he tracks it all over the house. Any suggestions?

I use tidy cats for multi cats. However it is non-clumping. Another thing you may try is to set his litter box on a good sized carpeted rug or even a rubber mat. Hoepfully that will get the biggest part of it.
If you decide to change his litter I would do it over the course of a few weeks... some cats get persnickety over what they will use and decide to go outside of the box.