The uv flashlight – also called a black light flashlight – has been increasing in popularity for several reasons.
Those who live in warmer climates like it, because it helps them find scorpions and destroy them before they get stung.
People who use glow-in-the-dark objects (i.e., a Frisbee) like the way it recharges the object, if it lost some of its glow-in-the-dark ability.
And someone who likes to ensure the cash they take in isn’t counterfeit likes the uv flashlight because it helps them look for the security strip printed on $5, $10, $20, and $50 bills. If currency being viewed under a uv light doesn’t show a security strip, then it’s counterfeit.
HVAC specialists like the way a uv flashlight can help them find leaks, using special uv dye.
And pet owners like the uv flashlight for the way it helps them find where their pet spit up. For example, John Doe pet owner is on the way out the door, to go to work, when he sees his cat throw up on the carpet floor. In a hurry, John simply wipes up the throw up, and figures he’ll do a more thorough cleaning when he gets home from work. However, once he returns home, after work, he can’t find the spot where his cat threw up. No problem, all he has to do is wait until it gets dark, and then shine his uv flashlight on the carpet. It will cause the area where his cat threw up to luminesce or glow slightly. Then he can see more clearly where to do a more thorough, deep cleaning of the spot.