Doing a thorough search of your home and your yard with a blacklight, is actually a very effective way to locate scorpion activity and their hideouts.
When your investigating your scorpion situation, use an ultraviolet light. When shone directly on a scorpion, they light up like glow in the dark stars that we used to put on our bedroom ceilings as kids.
But why do they glow?
This is actually a tough question to completely answer. Scientists are working on getting more information as to why this occurs, However, they have some ideas as to why scorpions glow in the dark.
Scorpions have what is called an exoskeleton. They possess a cuticle which is a thin a section called the hyaline.
The hyaline section reacts to the UV light and moon light, and causes scorpions to glow.
Scorpions usually will not glow upon molting. Their cuticles have to completely harden in order for them to fully glow.