First I never power wash the front or any other part of our trailer it's just to hard on the decals. I always keep a good wax job or in my case a polish job (I use Nu-Finish polish). When I get a load of bugs I rehydrate them with water or a light solution of water and Dawn soap, I reapply ever 15 minutes and use a brush to clean them off, if it's really bad I use Simple Green and a sponge and polish the front because the Simple Green will remove any wax or polish. The longer you leave them on the harder they come off and some of the little buggers will damage the finish.

Denny