I’ll admit it. A black light flashlight is fun to play with. But aside from the novelty aspect they also have a variety of practical uses inside the house and out that you never thought of! The flashlights are very inexpensive and small so you can easily carry one with you. Read on and learn just how helpful a black light flashlight can be. By the way, it would be a perfect addition to a Well Organized Junk Drawer. We put ours in our “Mini Toy Box in a Drawer for Adults and Kids.”
A word of warning though… in some cases ignorance can indeed be bliss. Just saying.
Black Light Basics
Without boring you with a bunch of scientific stuff, basically a black light emits ultraviolet rays which are invisible to the human eye. It makes any item glow if it contains phosphors. Phosphors are any substance that absorbs energy and re-emits it as visible light. All you need to know is that there are many things that have phosphors. This is what makes a black light flashlight useful.
Black Light Flashlight
There are many options for black light flashlights. Most small ones run between $7 and $15. Depending on what you want to use it for, you may opt to pay more for a larger one. Here is a UV marker you can use to protect your property. We talk about that below under security.
Uses for Your Black Light
Is Your Money Fake?
Newer money has been equipped with florescence of bands that show up under a black light.
Pet Stains
Anyone who’s watched a crime show is probably aware that body fluids show up under a black light. Hence they are great for detecting pet stains.
Security
In case of theft your valuables can easily be traced to you if you’ve marked them with a special UV marker.
We used this UV Pen. PEN
Allow the ink to dry before touching.
Ink can be removed with cotton ball and alcohol. 
How Clean Are Your Hands?
Kids not washing their hands good enough? Give ’em the old black light test!
Shopping for Used Furniture
Checking out Craig’s List for a used couch? Pack your black light for some on the spot icky stain sleuthing.
Inspecting for Mold
Yep, mold is full of phosphors hence you can easily detect it by shining your black light flashlight onto it. Another good idea of your buying a home.
Buying a Home
A black light will come in handy for checking for a variety of things, the aforementioned mold being one of them. On the slightly more disturbing side you could also tell if there are blood stains on the floor.
