The double-bait system, which includes a food/floral attractant and a pheromone lure, entices Japanese beetles to enter the trap, where they end up in the collection bag. When the bag is full, you simply dispose of it, bag and all — unlike other traps that are a hassle to empty and clean. The trap has a loop on top so you can hang it from a tree limb or a stake (not included). The hourglass shape of the bag prevents beetles from escaping, and perforations prevent rainwater from collecting in it. Includes two disposable bags; additional bags are also available.