Attracts and kills house flies in as little as 60 seconds. Ideal for poultry houses, dairy barns, swine facilities, feedlots and horse stables. Red pellets contain two specially formulated fly attractants to lure flies. Contains Bitrex, an extremely bitter substance to help deter accidental ingestion by children and animals. Remains effective for up to 4 weeks. Kills flies resistant to organophosphates and carbamates. Can be used indoors or outdoors. 6 oz of bait treats 1,000 sq ft. Contains 0.5% imidacloprid and 0.1% Z-9 tricosene.