Ready to use, pre-measured bait trays. Features mouse killer with naturally derived, non-toxic ingredients that is safe if accidentally ingested by pets or wildlife. Also safe for birds of prey with no risk of secondary kill. Ideal for indoor or outdoor use to effectively kill unwanted mice from industrial buildings, livestock premises, homes, barnyards, and more. Contains (4) 3 ounce trays. Active ingredient: Corn Gluten Meal. Refillable: No Pest Type: Mouse Indoor/Outdoor: Indoor/Outdoor Active Ingredient: Corn Gluten Meal Pet Resistant: No