Aerosol dispensers are widely used for the application and use of products such as cosmetics, lubricants, paints and coatings, medications, foam insulation, fragrances, cleaners, and cooking oils. Aerosol dispensers are pressurized containers and must therefore be used and stored safely. The instructions on the dispenser must always be followed when using and storing aerosols. Automatic air fresheners have indicator lights to let you know if your batteries are running low and also lets you know if your odor control or fly control metered aerosol can is empty! Adjust the timer to allow aerosol mist to spray at 5 to 10 minute intervals; allow more sprays for pet odor control.