Standard Aerosol System offers automatic odor control for every budget. Refills odor control effectiveness for 30 to 168 days 12/24 hours per day LCD model features adjustable spray intervals of 7, 14, or 28 minutes or 5, 6, or 7 days per week LED model features adjustable spray intervals from 5 to 25 minutes and service intervals of 30, 45, or 60 days For use in TC Standard Aerosol System