SUPER BRIGHT & LONG LIFETIME 51 LED UV BLACKLIGHT FLASHLIGHT PORTABLE DETECTOR Reveal an invisible universe with UV black light. Whether you're identifying pest issues, verifying the authenticity of documents, detecting hidden pet stains in your home or spotting residues in hotel rooms, this powerful flashlight delivers performance and durability in a compact design. How does it work? The UV black light reveals phosphorssubstances that emit visible light when exposed to radiation. Since these substances are invisible to the naked eye, the UV flashlight enables detection by illuminating them. Frequently Asked Questions: Q: Can this item detect cat urine? A: Yes, it can. Q: Does this work for bed bugs? A: Yes, the UV flashlight can help detect bed bugs in dark environments. Q: Will this device work for finding scorpions? A: Absolutely. It is effective for locating scorpions. Q: Can it detect human urine around a toilet? A: Yes, this flashlight works well on dried urine stains. Q: Do people use this to identify areas that need cleaning or inspect hotel rooms? A: Yes, the UV black light is highly effective for such purposes. Q: Can I use it to find a leak in an air conditioner in my car? A: Yes, but you must add fluorescent dye to the refrigerant system. Important Notes: - This flashlight detects dried urine stains only. - The ultraviolet LED performs best in dark environmentsthe darker the area, the more effective the detection. - If the flashlight does not turn on, please check the batteries and battery compartment to ensure they are correctly installed with proper polarity.