Did you clean up any rust and paint it before you used the graphite paint? If the surface was rough with rust the graphite paint will not work as well. You want a nice smooth surface. Also, I have heard that the brush on version has a higher content of graphite than the spray version. I use two coats of the brush on version and use the spray for occasional touch ups. This method has worked great in my experience.I used that spray graphite on my Arins walk behind and the snow sticks more then ever. It wasn't cheep either.