I bought these ones for the pure fact that I didn't have to drill them in anywhere and could just stick them to where I wanted/needed them.They won't stick anywhere. They're constantly coming down, knocking whatever it was holding onto the ground. Complete fail. When they do seem like they're stuck for good, the noise they make when they do come unstuck scares the piss out of everyone around.If you're going to drill them in, I say go for it. But if you're like me and trying to avoid that in favor of the sticky backing, try a different product because this isn't worth it.