I can't remember if I have asked this before, but how essential to you consider willy washing to be? I have always routinely checked them and washed when grubby, probably ended up being every year or two, but I have never done Hank as his bits are, well, small and I'm not so sure a) I wouldn't hurt him as my hands aren't exactly dainty and b) if my body would contort enough to get down there and stay safe while doing it