I have some Magic Ceiling Cleaner that I've had sitting on my shelf for a while. It was special ordered in for a company that went out of business. It's a 2 part mix, hydrogen peroxide based cleaner. A gallon of part A and a tub of part B makes 8 gallons of product. It is sprayed lightly on the ceiling tiles after vacuuming or dusting around the vents to remove heavy accumulations of dust. The grids are wiped down with a sponge, and it is left to dry on the tiles. According to the directions, it takes 4 - 6 hours to complete its job. It basically bleaches the dirt and turns it into a dust, which will precipitate unseen over time. My cost on a kit was $40.00. I'll sell it for that to move it. If you buy it and like it, I can't guarantee that i can get any more.
