Spray surface protector provides a shield from grass, dirt, and rust build up on mowers. Can be used on plastic or metal, reduces grass clumping and is great for grass chutes and collection systems. Use only on cool mowers with spark plug disconnected. Apply to clean underside of deck, let dry 15 to 30 minutes; for best results apply a second coat and reapply throughout the season for maximum performance. 10 oz. aerosol spray can.