The Ameritech-Rug Gripper Non- Slip Sticker Carpet Pad with anti-curling are reusable gel pads that work on rugs and carpet. The rug grippers keep any rugs or carpets from moving out of place which will prevent bunching, curling, slipping or tripping. They are easy to use and all you have to do is place the rug grippers on each corner of the rug or carpet you want to stay in the same place. They are eco-friendly made of renewing gel that has no smell or odor. They stick to your rug or carpet, not the floor so you won't have to worry about any residue being left on the floor that has to be cleaned up. If they get dirty or start to come up because of losing their stickiness, just remove them, wash them with soap and water and they will be good as new and you can use them again. Using the grippers on your rugs you can keep the rug down and avoid accidents. They will not scratch your tiles or floors. This is a great product that works well to keep your rugs in place and I highly recommend it.