Review on 🔦 Findway UV Flashlight Black Lights - 12 LED UV Blacklight Detector Pack of 5: Ideal for Dogs, Pet Stain Removal, Bed Bug Detection by Nicole Rogers

I bought these to use in kids science programs. They are very valuable and work as expected. EDIT: After a few months of use, their only complaint is that one of them is a little difficult to turn on and off. Sometimes I have to shake it or slap my hand to put it back on. To be honest, for the price, if one out of five doesn't perform as well as expected, it's not a big deal, but I still thought it was worth mentioning. Insects see different types of light and so on. They also make great basic "vanishing ink" when writing a message with a yellow marker on yellow paper. Never stop getting "hoorays" from kids!