Commandâ„¢ Hooks and Clips with Water-Resistant Strips stick to many surfaces, including glass, mirror, tile, fiberglass, wood and painted surfaces. They adhere firmly and come off leaving no holes, marks, sticky residue or stains, providing a great alternative to unsightly, unreliable suction cups and damaging screws and nails. Moving them for cleaning or reorganization is as simple as applying a refill, waterproof Commandâ„¢ Strip!