Yes, in theory—but not in a way that helps with a real infestation. Germicidal UV-C can kill bed bugs when they're directly exposed at close range for long enough. That part is real. The problem is everything else about how bed bugs live.

How UV-C affects bed bugs

UV-C damages DNA and can dry out insects over time. Lab tests show higher mortality with longer daily exposure. You need UV-C specifically—tanning-lamp UV-A won't do much, and a regular black light definitely won't.

Effectiveness drops fast with distance. A few inches away might work; a foot or more away, you're mostly wasting electricity.

Why it fails in practice

Bed bugs hide inside mattresses, box springs, wall voids, and furniture seams. UV doesn't penetrate fabric, wood, or drywall—it only hits what it can see. Bugs in hidden spots survive, reproduce, and refill the room.

You'd need to hold a UV-C wand inches from every surface, every day, for weeks, while still missing most of the colony. Pest professionals generally consider this roughly as useful as squishing the bugs you spot one at a time.

What actually works

For a full infestation, call a pro. Heat treatment—raising room temperature to around 50°C (120°F) or higher—reaches bugs in walls and furniture. Professional insecticide applications work too, though some populations are resistant. Either way, you want inspection, targeted treatment, and follow-up—not a gadget from an ad.

Where UV might still help

A UV sanitizer box can make sense for small items you can expose on all sides—luggage after a trip, shoes, a backpack. It's a supplement, not a treatment plan. Consumer UV devices marketed for bed bugs often oversell what they can do.

Safety

UV-C burns skin and eyes. Don't run germicidal lamps while people or pets are in the room, and don't point them at yourself. Tanning beds are not a substitute.