COUNTRY VET Zep 34-2050CV Metered Fly and Insect Killer/Repellent (3 Pack) Kills, And Repels Flying Insects Metered Fresh Outdoor Air Freshener, That Is Released Every 15 Minutes Formula Lasts 30 Days Contains Highly Effective Insecticide, That Is Designed Especially For Use In Automatic Dispensers A Great Way To Control Insects In Many Different Areas From The Barn, To Your Attic, To Inside The Home