5 Days. For 5 days at my boyfriend’s apartment the neighbors’ CO2 detector has been chirping. Once every minute. For FIVE DAYS. The bedroom faces an alley, as does the kitchen, where the building’s detectors are located. So every time it chirps the sound rebounds through the windows, all around the alley and is clearly and distinctly audible in his bedroom. So all weekend I was treated to… chirp… chirp… chirp… chirp… it’s more annoying than a water drip. We’ve determined that it is the neighbor directly below him. I am fairly certain that they are at home. Why can’t they hear this? Why haven’t they stopped it? What the hell is going on down there?!? I’ve never been happier that the weekend was over and that I would be sleeping in my own bed again. How sad is it that I’ve been driven from my boyfriend’s arms by the lack of a 9 volt battery? Would it be rude of me to tape a note and a fresh battery in a ziplock to their door?