Which rug pad is the most effective for placing a rug on carpet flooring?

Superior Lock is the only rug pad designed to keep area rugs anchored on carpet. Most rug on carpet pads use a dual adhesive film that sticks to the bottom of your rug and the carpet. We’ve tested these and found that the majority of them don’t work very well and they can only be used once. The Superior Lock pad can be placed and replaced many times without loss of grip or quality.