I dont know how to remove/clean my styrofoam dummy...any suggestions??

I fill my sink with hot soapy water and let my dummies soak for about 20 mins. After that the fondant will slide right off into the garbage can.
HTH

I am getting ready to make my first dummy cake this week so I am also interested in the answer to this question. So here is a bump.

I just start hacking on it, eventually it starts to come off in nice thick sheets. I try to wash my dummies as little as possible. (I don't reuse them on client cakes, just for practice pictures). The more times they are wet and scrubbed on, the sooner they start to get fuzzy and the edges start to wear down.

I just chip off the fondant with a knife as it's usually hard as a brick by the time I'm ready to reuse the dummy. I have washed them off with soapy water but all of those now have a very musty smell and it's not nice at all. I've reused them, recovering them with buttercream and/or fondant and that smell goes not seep through.

KimAZ