Scrub it down with a good cleanser, fill it up to just below the level of the evaporator plates with a solution of bleach and water and allow that to sit over night; pump the mix out and dry the panels and wipe them down with 90% alcohol from your local pharmacy, allow the box to thoroughly air dry (leave a drop cord light with a 60 watt bulb burning in the bottom of the box over-night); then sand the panels down with 120 grit paper, clean the dust out with a shop vac and again wipe the panels down with 90% alcohol; dry again, and then paint with egg-shell white "EasyPoxy". Two coats are better than one but one will make a world of difference. BTDT--Got the T-Shirt. It works.See pics. Paint sounds like a solution. Anyone have a recommendation?