My micro-cut paper shredder started acting up recently, struggling to shred anything more than two sheets at a time and even stopping part way through shredding. I was a little skeptical about these shredder sharpening and lubricant sheets but I decided to give these a try figuring it was worth a shot and a lot cheaper than buying a new shredder. I followed the instructions exactly of shredding a sheet and then putting the shredding in reverse for 10 seconds. Half way through running the shredder in reverse I noticed the shredder start speeding up and the motor stop struggling. The shredder has been running like new since. I didn't think it would work, but they really did and I'm impressed.