I Purchased 5 for a backyard party. The ones that worked were very effective, but two of them burned very slowly so that the repellent was still mostly blue after 7 hours. Yes, there was a glow the whole time and the repellent did change color slightly.

Great product. Have used for years both hunting/fishing and at home. Works great, we live in Louisiana-we have mosquitoes. This keeps them at bay so we can enjoy the outdoors.

Well i followed the instructions, i put liquid bottle, then cartridge, I turned on,show to me orange light,then I left on the table in my patio and I went in the house wile the poison spreading around (45min) Then I went to play with my child, both of us legs are completely destroyed from mosquitoes