One of the cans of adhesive leaked en route and made a mess inside the box. They sent me a replacement, but they could do a better job of stressing just how strong that stuff is. I got some on my garage floor and can’t get it up. I will tell you, you don’t want to get it anywhere unintended – garage, hands, etc. That said, my wife likes it better now backing out of our steep driveway in her van because it no longer scrapes. But she didn’t have to “mess” with the installation part, so overall mixed feelings here.