My draft produces smegma in amounts so vast as to stagger the imagination. I have begun bathing him more often to try to cope with it, but he just makes more. It smears all down his hind legs and cakes on his belly. In between baths (he's had 2 so far this spring) I use Krud Buster and hot water to "spot clean." I also clean his sheath weekly, though I have begun really light cleaning with just water more often.