EPA-registered, USDA-approved kit controls flies, mosquitoes, gnats and moths automatically – 24 hrs a day for a full 30 days! Insert 30-day fly spray refill and forget about it. Features 15 minute spray setting and on/off switch. Includes automatic metered wall dispenser and metered fly spray refill. Fresh outdoor-scent fly spray contains 0.975% pyrethrins and 1.95% piperonyl butoxide. Easy-to-install refill sold separately. Easy-to-mount dispenser can also be used with air fresheners. May be used in horse, dairy or poultry barns, kennels and animal care areas. Requires 2 “D” batteries (not included). 5 year dispenser guarantee.