Actually, I did not want to believe and was extremely skeptical ... but I had a problem, my Mam without drilling and hammer technology in a senior residence set up the room. Do the times: Sure, I know the variants with the use of expanding foam, construction adhesives, acrylic, etc., but the meisst also produces unwanted residue when removed. So I dared to experiment with the power strips and the manufacturer's promise: "later removal without residue." On more than rolled wallpaper I put the power strips a (mainly with the existing hook) for images (sometimes up to nearly one kilos!), No hooks for attaching a Eckblumenbords wooden ... and I'm very excited !!! Everything works easily, is absolutely clean .... and lasts and lasts and lasts !!! And since I had missed me twice the amount, I also know that these Strips fantastic (and without any residue) go off again !!! Thanks tesa ... from now on I am your "Powerstripsfan" .....