When I did mine, I tried boiling it and it left so much crap stuck to it still. I would try getting as much as possible cut and scraped off before boiling, then boil it. I have also heard of using honey or syrup on spots you cant get and laying it outside, and the bugs will peel it off. I have never done this though. I have also heard of using baking soda when boiling, because it helps the stuff to come off.