I use soap actually. When my little buddy get's dirty he reminds me of a person's foot that likes to walk around with no socks on. I think we've all seen the dirty foot. ButterBall's momma sent a care package with soap from http://www.littlenudedudes.com/ It works great. He cleans up rather well with it. For his next bath though I'm working on some kitty armor to cover my arms, shoulders and back.