I've tried one of those gas alarms. It turns out that a cat litter box in the area sets it off.
And there was one theory that pets breaking wind would cause a false alarm.
Amazon.com: Kidde KN-COEG-3 Nighthawk Plug-In Carbon Monoxide and Explosive Gas Alarm
I've known about propane being heavy for years. It's one of the things that worries
me about having propane (for soldering copper) in my basement.
I know that a major leak could be a disaster, since my oil burner is the absolutely perfect Propane detonator.
(AKA 'basement-bomb').
That oil burner is the main reason not to add any more propane leak risk to what we already have..
I think moving those little propane and MAPP bottles out to the detached garage might be a good idea..
I think the rust factor might even be less than down in the basement..
