Insect trap and bug zapper bulbs emit ultraviolet light that attracts many types of insects. The bulbs themselves do not trap or kill the bulbs, but draw them into the part of the equipment that does. The bulbs in this category are specifically designed to attract flies and other insects. Ultraviolet insect trap bulbs are used in residential and commercial bug zappers and electronic fly traps. The lamps emit UVA blacklight wavelength of light, which attracts flying insects. Fixtures using these UV bulbs are often used in outdoor applications and commercial kitchens to control flying insects and improve sanitation.