Our indoor Christmas lights have all fallen to the floor. Evidently 3M hooks don't stick for long on textured walls, however I can find no warning about this on the product packaging or in the literature. Beware. Hopefully I will someday need this newly purchased pile of hooks for use on a smooth surface somewhere, but it certainly won't be on any of our walls as every last one of them is textured. Good product. Irresponsible marketing. We are not amused.