These stair treads have finished off out stairwell perfectly. They are best used when mounted with tape of some sort, I used carpet tape. They shift around after the tape collects dust and loses its grip, but I have pets and pet hair tends to get in the tape. When they shift though, tape or none, they have not yet presented a tripping hazard and I just slide them back in to place from time to time. Best vacuumed with a hose attachment to get the dirt out from between the design.