This is my review from many weekends and long nights along the Lake Superior shoreline. I started hunting Yooperlites last winter and it just catches on to you! They are fun and exciting to find, but it helps when you have the right UV light - and what you need is a black light filtered 365nm spectrum UV light. This is just to help point you in the right direction if you are new to finding Yooperlites and want a good head start. My pick is the Alonefire 12W UV 365nm light: https://www.amazon.com/Alonefire-Flas...