I have a runner in the hallway between my 2 bedrooms that I have been constantly tripping on for the last year. My doors wouldn't close because it just pushes the carpet until it starts to fold and then everything is stuck. I've gotten so frustrated that I've just put it away a few times, but I have gross apartment carpet that I can't stand even more than I can't stand tripping on this stupid thing. But..... after putting this rug pad down, there is no more moving and no more tripping! It is stuck in place and it is amazing!!! Super easy to use and does exactly what it should do!