Product review (1 stars): Not effective
I've tried two different sets of these. The first time I did not clean the bottom of the granite properly, so I figured that's why they didn't stick. I ordered another set and followed the directions exactly to the letter, and they still did not last. They worked for a few days and then let loose. I spoke to an expert at Home Depot, and his advise was NOT to adhere at all to the bottom of granite, as any pressure could eventually crack it. He suggested side mount brackets to the cabinet. This seemed like a good idea, but very ineffective.