Bug Light Bulbs
Flying insects are attracted to short wavelength blue and near ultraviolet (black light) light sources. Standard incandescent light bulbs emit both short and long wavelengths so they attract flying insects. Yellow bug lights do not repel bugs - they just don't attract as many as standard bulbs because the insects cannot see the yellow light as well as they can see blue or ultraviolet light. Insect traps, on the other hand, attract and kill the bugs. Inside the traps are fluorescent bulbs with strong UV wavelengths to lure the insects into the trap.
Select either the yellow bug light category or the UV insect trap bulb category depending on your application.