Static clings are designed to be used on smooth surfaces (particularily glass) They can be removed and reused as often as required. Clings can be provided with or without adhesive depending on your needs. Clings with a mild adhesive are generally applied to glass but are ideal for rough surfaces such as metal, wood, canvas, binyl skirting, plastic, concrete and some painted surfaces. Even with the mild adhesive these clings can be easily removed without leaving a residue or damaging the surface they are applied to.