My neighbor has a 'set gun' alarm for his garbage cans. It's a shotgun shell with the shot/wad/powder emptied out...so just the primer.
Works great!
Only had his wife accidentally set it off once...
Not to get off topic here, but did your old man ever get up to the Richardson south of Fairbanks for the short range weapons moose hunt? I ended up taking a younger cow the other day on my tag.
