Eb, I was thinking about introducing them to my dog in case she'd like to help with clean-up.
I'm not sure an appealing flavor would trick them into cleaning themselves more assertively..mamacat obviously isn't interested in keeping them from stashing gumdrops (but she does clean them nicely after I wash them..) and the kittens probably aren't quite big enough to undertake that type of cleaning yet.

I'll give them haircuts tonight and see if that helps.
I'd completely forgotten that I did that to/for mamacat when she was carrying the disgusting accessory..it'll probably work for them too.