Discovering red wax inside your keyhole can raise immediate red flags. This seemingly innocuous substance could imply that someone is closely monitoring your property. Thieves and squatters might utilize wax as a discreet technique to determine if a property is inhabited. By adding wax or another substance to the keyhole, they can observe whether it remains undisturbed; if the wax stays intact, it may suggest that the property is vacant, making it an easy target for intrusion.