You can securely mount these patented dispensers to any hard surface without drilling screw holes into the surface. This mounting procedure will allow you to remove the dispensers with a razor, putty knife, or wire slipped behind the mounting plate. However, this procedure is not suggested for hard use and/or ultimate long term use in shower or tub area.
To permanently secure dispensers, this method will require that screws or molly bolts be used. This method is suggested for tub/shower installation for maximum security.