Keep your outdoor space-free of nuisance flies with the TERRO Fly Magnet disposable fly trap. Eliminating just one female fly can reduce the population by 150 to 500 flies per year. This trap attracts and kills a variety of common flies, including house flies, barn flies, and blowflies, to drastically reduce fly populations around your home. It’s also easy to set up – just add water and hang.Attracts and traps a variety of common flies, including house flies, barn flies and blow fliesEasy to use – just add water and hangNo-mess disposal – snap on the top to seal and then discardDecorative bait bag hides trapped flies from viewFor outdoor use – draw flies away from your home before they come indoorsBait fully activates after a few hours, effectiveness will not be diminished over time