You could also try a spray bath. Plain (warm) water in a sprayer that has never had anything but water in it. Spray above Peatie or even up into the air so that the water falls on him gently. It makes quite a mess, so do it right before you change the paper. If he's not use to it, the sight and sound of the spray might initially spook him, so you might have to try it more than once before he decides that it's a good thing.