[Stripit]

Ok what methods of cleaning have you done?
When I had the water stain from the leaking a/c seal I started with various spray can carpet cleaners. Then went with the Folex right out of the plastic spray bottle. Then went to the Bissell home type heated carpet cleaner using the upholstry attachement and only hot water. Then added the normal Bissell carpet cleaner and the Folex to the tank. That did the trick. The dark ugly black/grey water stain is gone. I'd say 95% so much so you have to really look to see any slight discoloration. Everyone said don't use the carpet cleaner on the ceiling? but that is what worked for me. If your ceiling panel is bad enough that you feel it needs to be replaced why not at least try the carpet cleaner? I would have rented one from Lowe's but I owned the Bissell.