+18 Do Bed Bugs Glow Under Black Light 2023. When you shine a black light over areas where bed bugs might lurk, like mattress corners, bed frames, and furniture seams, you could spot them. In fact, black light is one of the most effective ways of detecting bed bugs.

Black lights can be used to detect the presence of bed bugs by identifying their fecal spots, which will glow under the ultraviolet light. So to prevent this escape, you need to block all the exit points. Bed bugs are hiding experts, so anything that makes detecting bed bugs easier can be beneficial.

