Apple Maggots are a type of fruit fly that attack apples, blueberries, hawthorn, plums, pears and cherries. They cause extensive fruit damage that renders fruit useless. The fly is smaller than a housefly and appears throughout the summer. Most fruits are attacked by flies that lay their eggs during late spring to early summer. The SpringStar Apple Maggot trap and lure set have proved effective at reducing apple maggot damage. Flies are attracted by the lures and come to a sticky demise on the juicy-looking apple sphere. The reusable trap includes our one-season, controlled-release lure system. Place traps in trees 1 or 2 weeks before bud break in early spring, and leave out until harvest time.