No bug light actually repels bugs. LED lights, specifically the bulbs typically used in residential lighting, emit very little light in the UV spectrum. LEDs also emit little heat from their light source, further reducing their attractiveness to bugs. But, it isn't just UV that bugs are attracted to.
What color light is best to keep bugs away?
yellow
What color porch light keeps bugs away?
yellow bulbs
Do LED bulbs attract less bugs?
LED lights produce little to no UV light and a minuscule amount heat, which makes them less attractive to bugs—so long as they emit longer wavelengths of light.
What color LED lights keep bugs away?
LEDs on the other hand—both “cool‐white” and “warm‐white”—were the least attractive to insects. Yellow-hued light bulbs are worth trying, too. “Yellow lights—and red lights—do not attract insects as much as regular white lights,” Russell says.