[MineralMan]

"MineralMan proposed switching off the electricity for the noisy apartment at the breaker panel.
"

There are tons of ways to inconvenience loud party holders. Household ammonia, squirted under the door of the apartment from a squeeze bottle works pretty well. That's pretty much guaranteed to empty the place. Turning off the electricity, though, really, really works well. I did that one time in a motel where a loud party was in the room next to mine and the motel manager wouldn't answer the phone. I walked out and around the back of the motel until I found the breaker panel. The room numbers were clearly marked on each breaker. So I just switched that one off. Since the manager of the motel wasn't answering the phone, the room stayed quiet for the rest of the night.

A firearm is probably a poor way to stop a party, I'd think, especially if the partiers have their own firearms in the house, as everyone here seems to recommend.

Bad news all around.

[Charles Martel]

Ammonia under the door, eh? Sounds quite effective.

My personal favorite for taking the fun out of a drunk party is a box of *these* little jewels:

Just drop them where they'll be stepped on and crushed, then back off and watch the fun from a distance.

I thought of the circuit breaker trick, too - but I'm in the process of rewiring my garage, so I kind of have that stuff on my mind. An added nasty trick is to trip the main breaker, then use your own padlock (wiped clean of fingerprints) to lock the breaker box closed.