(Country Vet) The Country Vet Macro Mosquito & Fly Control System can be used indoors or outdoors to control flying insects. Macro dispenser automatically discharges Metered Fly Spray every 15 minutes for a month, or adjust the frequency using the programmable settings. Delivers 250% more spray per shot than the standard Flying Insect Control Kit. Kills and repels flying insects, including flies, mosquitoes, gnats and small moths. Country Vet Macro Mosquito & Fly Control System includes Macro dispenser and 14 oz. can Country Vet Metered Fly Spray. Contains 0.975% Pyrethrins and 1.950% Piperonyl Butoxide. Requires 4 D-Cell batteries.