I got some overspray on mine, and tried to clean it off with paint thinner. BAD IDEA! It dissolves the plastic as if it were paint. My dad ended up polishing it out with 1000 grit sand paper. At work we just use a soft, damp cloth to clean the plastic faces on ridiculously expensive stereo equipment, so I would try that first. Just stay away from any kind of solvents or anything like that.