409's lemon-scented Heavy Duty Oven Cleaner cuts through tough baked on food and grease in five minutes. FIVE MINUTE CLEANING: Spray in cold oven. Hold can upright, pointed away from face. Liberally spray spots from a distance of 9-12 inches. Allow to stand for 5 minutes. Wipe clean, use a wet sponge, cloth, or paper towels. TWO HOUR CLEANING: Spray in cold oven. If you have a self-cleaning oven, make sure self-cleaning cycle is turned off and oven is cold. Hold can away from face. Spray top of oven first, then spray sides and bottom of oven. Spray over oven surfaces from a distance of 9-12 inches, making sure that the soiled surfaces are well covered. Close door. Wait 2 hours for foam to penetrate oven soils. Do not turn on oven or self-cleaning cycle. Wipe clean. Use a wet sponge, cloth, or paper towels. EASY OVERNIGHT CLEANING: Spray in cold oven. Follow directions above. Close door, allow foam to penetrate overnight. Do not turn on oven. Wipe clean, use a wet sponge, cloth, or paper towels. WARNING: Do not use knife or other tools to pry open cap. Doing so may puncture container. Use in cold oven. Do not spray on pilot light, electrical connections, switches, light bulbs, heating elements, or thermostats. Do not spray onto aluminum or painted surfaces as damage to these surfaces may occur. Do not use in microwave, convection ovens, or continuous-cleaning ovens. Can be used in self-cleaning ovens provided that the self-cleaning cycle is turned off. USE ONLY AS DIRECTED. INTENTIONAL MISUSE BY CONCENTRATING AND INHALING THE PRODUCT CAN BE HARMFUL OR FATAL. Keep out of reach of children. Causes burns to eyes and skin on contact. Harmful if swallowed. Contents under pressure. Do not spray on pilot light, electrical connections, switches, light bulbs, heating elements, or thermostats. Do not spray onto aluminum or painted surfaces.