Works perfectly. Leave caps off to extend life.
Works better than I expected. I got this to smoke tobacco indoors. I didn't really expect it to work, but I thought it would be worth a try. When you blow smoke through it, there is no smell or anything coming out the other side. Every trace that you have been smoking is eliminated when using this. It is supposed to last 3 months with moderate use, but if you leave the caps off and let it dry it will last Much longer. Mine lasted almost 7 months of daily use because I left the caps off. My friends couldn't believe that it completely eliminated smoke until I showed them, and then they all got one. If you use this properly, there will be no traces that you just smoked (except for the smoke from the burning tobacco).
Rating: 5 stars