The Plum Maggot Monitoring Trap is a strong Corrugated Trap which contains a pheromone Lure that is designed to lure plum fruit moths towards it protecting your plums.Strong corrugated trap with hanger. Contains one pheromone lure.Separate refill pack also available (contains one Pheromone lure).This hanger will protect 3-5 trees from Fruit moths and will be effective for 5 weeks.