Aerosol canister fits SeBreeze® 9000 Metered Aerosol Dispenser (sold separately). Microtrans"' odor neutralizer breaks down and eliminates ma I odors. Contains 63% less VO Cs per spray than a standard aerosol. Yields 9000 metered sprays; lasts up to 180 days in programmable dispenser. Space for installation and service dates. 4 canisters per case