Mann Lake HD376 Swarm Lure Swarm lure emits a slow-release blend of pheromones that attract the swarm and entices the scout bees to declare the swarm trap a suitable new home Simply attach a closed swarm lure envelope to the lid on the inside of the swarm trap with a thumb tack or staple Use one packet per trap Store unused lures in a freezer or fridge Each lure will last approximately one swarm season in the trap