What I usally do. I usally first clean it with a paper towel and some rubbing alcohol (or whatever you have handy) just to get off any excess dirt, finger prints or dust, though I do not know if this step is nessasary as it says it is a cleaner. Then shake the can well (this stuff will seperate a little) and spray a little in a few spots. Using a lint free cloth (it says on the can not to use paper towels), spread it around. If it does not spread a thin milky looking layer over the whole disk (but rather turns to water looking droplettes), use a little more. Then use a clean part of the cloth and buff it gently (it doesn't take long, just 5-10 seconds). If it still looks wet or has streaks etc, use a clean part of the cloth and buff it again till it looks clean. I am not sure if you are suposed to let it dry at all but I have gotten lazy and pop it right in the player/dvd drive and it works fine right after applying it. I think that I heard somewhere that this stuff can build up a little with repeated aplication so if that doesn't work, let it dry a little and do it again. Someone else sugested that you might try scrubbing with a soft brush (like a tooth brush) but I wouldn't try that to start (probably not nesasary). To tell you the truth, I have gotten lazy using it and basically just spray a little on, wipe it around and whipe it off (about 10 seconds total) and don't really put any effort in to buffing it at all. Also, the cloth I use is a round lint free cloth that came with a cd cleaning kit (about the size of a cd). I didn't have very many so I kept reusing it. It probably has lots of dried plexus on it and I am not sure if that help, hurts or doesn't mater. I was kind of thinking that it might redisolve and give it more of the filling material to fill with.