they last for years and years. i’m a chemist and have looked quite a few of these up. when it comes to leakage of the fuel, it has chances of fire and explosion. its time to focus on yourself, the same as if you had pneumonia or any illness. they get tracked down, hunted and burnt too. in parting, i must complement your new web site design. corner end location offers extra privacy and quiet. it was sweet, creamy, with a spicy kick leaving on your tongue. there were some huge cacti in there though. then everything left over is for food and entertainment. 