A deterrent burglar is a person who uses various methods to prevent burglaries from occurring. These methods include barking, setting off an ALARM, and using MACE as a form of self-defense. Barking is a sound made by a dog or other animal to alert its owner of potential danger. An ALARM is a device that makes a loud noise when triggered, usually to alert people of a potential threat. MACE is a chemical spray used to temporarily incapacitate an attacker. Together, these three methods can be used to deter burglars and protect property.