Hot and Cold Running Rats
You approach the turned-off rat faucet. Since it's presumably still connected to the municipal rat supply, you could probably get another rat out of it if you turned it on for a second.
You turn the faucet and a plump, drunk, aggressive rat squirts out of it onto the floor. It's amazing how much your quality of life is improved by reliable public utilities.
|Leave it alone|
You decide not to mess with the faucet right now.