Codling Moth Trap A pheromone trap is a type of trap that uses the pheromone scent of the female to lure and catch the male. Pheromone traps are used both to count insect populations by sampling, and to trap pests to prevent reproduction. RHS endorsed An aid to apple maggot control Protects up to 5 trees Use from late May - August One trap lasts one season Trap safe to wild birds. Contains 2 lures and 2 sticky bases.