An effective weapon against the adult gypsy moth during the summer mating season. Traps and kills adult moth before mating occurs so you can use less pesticides. Pulls male gypsy moths in from a 1/4-acre area with a powerful pheromone lure . Effective as long as moths are active from late April through to late September. Includes 1 trap and a pheromone lure., Manufacturer: SpringStar LLC