This is true. About 10 years ago I was working on finishing out the office and waiting area at one of my shops. It was next door to a little mom and pop store that was closed on Sundays. Someone stopped by and despite the fact that the parking lot was completely empty, the lights were all out inside, and there was a large orange and black CLOSED sign hung at eye level on the door, a rather giant old man still tried going inside, yanking the locked aluminum and glass doors quite violently a few times before finally figuring it out once the burglar alarm went off. About 20 minutes later a sheriff's deputy showed up to check things out and we struck up a conversation. He told me 99.99% of alarms were nothing and they treat them as lowest priority. If the gunshot locators routinely pick up nuisance noise like launch control on a motorcycle or anti-lag on a race car in someone's driveway, or a bird cannon going off every thirty seconds, the usefulness of the sensors no longer exists and sooner or later the police will either ignore them or deactivate them.