Exceedingly effective. Ideal for smallholdings, poultry farms, dairies, domestic areas, homes - or anywhere plagued by flies every summer. Low cost, easy to use, disposable, can catch up to 20, 000 flies and once trapped they can't escape. Bait is especially appealing to female flies, breaking down the breeding cycle - so reducing the next generation. Simply hang the fly trap away from the areas you wish to protect. Bait lasts up to 6 - 8 weeks.