Lab...I hunt in Eastern NC...South of Suffolk...Between the Great Dismal Swamp and the Chowan river...what isn't crop fields is swamp...My Thermal Cell is strapped to my climber...I don't go without and it works...

How it works...It has a small butane cylinder and a wafer pad that you place on top...you turn it on and their is a small flame inside that heats up the wafer...It needs to stay parallel to the ground or the flame goes out...The cylinder and wafer have to be replaced...I can't remember how long they last, I believe its 2-4 hours, the cylinder will last twice as long as the wafers...(or scent pad)...