Ladybugs are beneficial insects that become a nuisance when they hibernate in homes. The BioCare Asian Ladybug Trap uses a special wavelength ultra-violet fluorescent light, as well as a pheromone lure, to attract indoor ladybugs. The ladybugs fall through the funnel and are trapped in the jar so you can safely dispose of them or release them outdoors. Do not spray or kill them indoors! They will attract other types of pest and cause an odor and health risk.