Can RugBuddy be used on top of Carpet?

The RugBuddyâ„¢ plug-in area rug heater is perfect for on top of carpeting, under an area rug. I have them on carpet, under area rugs in all of my bedrooms and living room in my own home.

In fact, Speedheat® even offers a reversible non-slip, thermal insulation padding, KlimaGrip™, for use on both carpeting and hard surfaces.