Home Depot didn't have sandpaper for the rental sander, so I decided to order it. I was nervous they wouldn't work as well as there's no glue on the back, but damn I was wrong. I rented a grinder from Home Depot and got into it. These sheets worked amazingly. I sanded down my 320 sqm. feet in less than an hour and consumes about 8 leaves. The sheets are double sided so I just turned them over and kept going. The deck was badly weathered, but the 60 grit made the cedar planks soft to the touch and ready for a permanent stain. Definitely recommend!