Originally Posted by chumpsteak

You'll want to put something in there to absorb moisture then, damprid is what I use. When it's hot out the fridge will create condensation and the last thing you want in there is mold. I also covered the entire inside of mine with vinyl and caulked all the seams. Even with the best intentions and safety practices you will get blow off and spillage and whatnot in there. The vinyl coating makes things easy to clean up

This pic was before caulking:



Here's my build thread.

http://www.homebrewtalk.com/f51/my-mini-fridge-fermentation-chamber-build-256068/