Product review (5 stars): Yes, they actually work.
I hated the fact that my dishwasher constantly tipped forward but I do not have the tools or the skill to install inserts into my granite countertops.  I found these about a year ago and installed them.  I did NOT follow the instructions that time and just cleaned the granite with windex before installing.  They worked anyway for a couple of months and then one fell off.  I ordered another one and followed the instructions to clean the granite with alcohol and they worked great.  FOLLOW THE INSTRUCTIONS!!!  You will need alcohol to clean the granite before installation and 2 "C" clamps.