Eww!!! Dog sh*t in my brand new uggs...how do I get it out!!!?

I am fourteen by the way, and I have no idea how to get out of the soles of the uggs. It's like in every crack and it's like embedded deep into the "uggs" soles and ughh!!! The sh*t is like engraved into the uggs pattern on the bottom ewww. I'm gagging just thinking about it. How can I get it off?