This sign is sturdy and looks really nice on our front door. I don't know whether it has cut down on the number of people knocking at our door as we've only had it up a couple months, but it does seem like we've had fewer rando knockers. Be warned, though: The foam adhesive is apparently pretty sticky, and you may not be able to remove it from your door if that's where you choose to place it. We're moving in a few weeks and I wanted to take the sign with us, but it is stuck so firmly to the door that I felt it might damage the sign or door if I tried to pry it off. Regardless, I like it enough to order another one after we get moved to our new place. :)