Made for RESCUE! Reusable Fly Traps – This attractant refill is compatible with RESCUE! Reusable Fly Traps. It attracts many varieties of common nuisance and filth flies. Attracts Flies – This attractant lures common nuisance or filth flies, including house flies, cluster flies, false stable flies, blow flies, bottle flies, flesh flies and others. Easy to Use – Just drop the water-soluble pouch into the trap container, add water to the fill line, replace the top, and hang or place the trap outside near a fly source. Outdoor Use Only – Flies find the scent of this attractant irresistible—you and your family members will not! Make sure to use your fly trap outside, and at least 20 feet from any living areas. Made in the USA – At RESCUE!, our goal is to design and manufacture the safest and most effective pest control solutions available for homeowners. We are proud to manufacture our products in the USA!