I will start off by saying this was great when we had laminate wood floors and had no issues with it. Since moving to our new house with concrete floors I’ve had this pad down for two weeks and it ruined my floors. Somehow the sticky underside has transferred to my floors and stained them. I’ve used a scrub pad and it doesn’t come up. This is just a hopeful warning to others who have concrete floors because I never would’ve thought this could happen.