method 2, number 1

Choose a trigger word. To train your dog to alert you when a stranger is at the door or on your property, you first need to establish a trigger word to act as a command. You can use “bark” as a command. Some owners prefer using a word other than “bark” (e.g., “speak”) so that the command is not so obvious to others around you.^[21][22]

• Once you choose your “bark” trigger word, say it with the same level of enthusiasm each time you give your dog this command.
• Use the same trigger word every time you command your dog to bark