I thought it worked pretty darn good.  I used to have another really good one, but after someone stole it with some other things I couldn't remember what it was called.  I tried a different dvd cleaner before this one and it really sucked, but this one got my older dvd player to not skip so much and to play dvds that it wasn't playing before...............  For a long time i thought it was netflix's fault the dvds weren't playing right, but sometimes you just need to get the dust off the laser and stuff.