Umm, for that particular picture, they were all getting a bath because I found a mite in one of their cages. I soaked them with a little bit of soapy, warm water (unscented, original Dawn soap). I never use soap otherwise. Snakes don't need bath's unless they have mites, which in that case they need to be thoroughly dealt with. Once in awhile if one of mine has been laying in its poo or pee all night, I'll rinse it off with about 80 degree water (A little cooler than luke warm to the touch). If you want to give it a bath for what ever reason, only put about one inch (or the height of the snake) full of water, so the snake can still slither along the bottom; not swim.