I have discovered (through devious investigation involving gardening in my backyard and glancing over the fence from time to time) that the near-constant alarm going off from the neighbour's place is a burglar alarm that they duct taped to their exterior wall a week or two ago. The siren is also outside, pointed at the kitchen window I leave open for ventilation, so I probably hear it louder than they do. I don't know if they've *intentionally* configured it to go off every time anyone including themselves comes and goes (which they or their many visitors do a lot) or if it's just such a cheapo system that there's no alternative, but either way, I think I just need to resign myself to it being background noise for the foreseeable.
(Or go over and communicate with them lolololol, so anyway.)
@zeborah, I'd definitely go for the second option.
