RESCUE! Outdoor Reusable W•H•Y Trap for Wasps Hornets and Yellowjackets comes complete with three attractants two chambers - and no way out for the insects. Catching 19 different species the W•H•Y Trap is the answer for most stinging insect problems. There s no need to guess which pest is bugging you. Follow the directions for set up and then hang the trap away from your outdoor activity areas – this draws the bugs away from you and to the trap! Attractants last for two weeks. The reusable trap is refillable and WHY Refill Kits are available for purchase.