Protect your apple trees from attack by codling moth with this Pheromone trap. Male moths are attracted to the pheromone and become stuck on the sticky paper. This prevents the females from being mated and dramatically reduces fruit loss. One trap will protect a normal sized garden. Place in an apple tree soon after petal fall and replace sticky paper and pheromone lure approx. every 6 weeks, or when paper is full. Contains enough for one growing season.