Advanced trapping system for olive fruit flies. Product details Attracts the male fruit fly and traps it letting you know if and when to treat trees for the pest For use on all varieties of olives Easy setup Contains two complete traps and lures These traps are used both for mass trapping and as a monitoring system and are a breeze to set up. The pheromone attracts the male insect where he is caught in the trap. Can be used for mass trapping (use 2 or more traps per tree) or for monitoring insect populations (use 1 trap per tree). When insects begin to appear begin spray application for insect control. Tree pheromone traps comes with 2 traps and lures per box. Non-Toxic.