A&M!!!! I so know what you mean. They clean themselves constantly. They are obscessive compulsive groomers, lol. Rats can actually over clean themselves, which is called barbering.

They clean the scent of humans off of them when you touch them, when they itch themselves they have to clean their foot afterwards, they even cleanthe inside of their ears............hardly dirty. Plus mine get baths on a regular basis and most smell better than the average dog!