NEVER wet electronics with water conducts, solvents usually don't and you don't want anything conductive in there, even if you think it has dried fully. If you want to clean it, get a few cheap paint brushes and cut the bristles shorter, so they become stiff. Remove the cover and brush every surface, then use compressed air to blow the dust out. If it's stubborn, spray contact cleaner over it and repeat, with the brush. Once that's done, flood it and blot up the solvent with paper towels.
Use window cleaner on the face, rear and cover, but don't spray it on the receiver, spray it onto a paper towel before wiping.
