No matter what I do this piece of junk will not lie flat on the carpet which is a low pyle berber carpet. Somebody decided to roll the thing up the wrong way and I had to lay 50lb salt bags on it for 48 hrs to try to flatten it out! It is now in front of my desk and the edges are curled up so bad that both my wife and i HAVE TRIPPED ON IT. If I were Staples I would be ashamed to say that I sold this to anybody. I don't have the carton to send this thing back otherwise it would have already been on its way.
It does not work on my carpet. Its more for a berber carpet but I'm not willing to pay upwards of $50 for a piece of plastic so I settled for one that is sub par.