Thanks Eric...I have no idea what a caso's is (maybe I do and reading it wrong also..) but I do know what the kazoo is. Now to get that mental pic out of my head of someone tooting it. I let mine swim around in the tub then use a drop of baby soap and let them run through my hands (not around their face). They come out smelling great and are clean. I'm slightly germaphobed too. I usually clean their enclosures with latex gloves on.