ORIGINAL: funeralplanner1
Um, don't let the can go through the whole call. Cut it off halfway. I just watched a show on TV, and that is what it said. A full drawn out call with the whole can, (letting the diaphram go from top to bottom of can) is some sort of a distress call. Dunno, give it a try.
i saw it too...very interesting show....discovered i was making waaaaaaaay too many distress calls but that won't be happening anymore....the can(s) should come with a cd or something to let everyone know what's what.