Spray No Scratch on areas you wish to protect. Apply daily for a few days, then as needed, depending on the severity of your pet’s habit. No Scratch is safe and non-staining on almost all materials. However, before using product, test on small inconspicuous area of surface. To use on screen doors, windows or no fabric surfaces, tape or pin a cloth to the screen or vertical surface, then spray. Should not be sprayed directly on any leather or suede types of materials.