I use it. I believe it works. I have used different brands, they seem to look and work the same. Goes on milky white and turns black when it dries. I buy it in gallons or quarts, I like to spray it into all the body seams before I seam seal them. When I spray it I use an air blowing nozzle that has a suction hose that was made to blow out solvent or something. The converter is thin enough to through it. You can hose is on and let run off.