What kind of dog do you own? Are they a good watch/guard dog?
I have two dogs.
The older is a two year old boxador (boxer/lab mix). She is about 70 lbs and a sweetheart. People a generally frightened of her size. She generally only barks when someone is in front of my house and if someone pulls in the driveway at night. Other than that, she is a sucker.
My puppy is a one year old Mastiff mix. She is about 80 lbs now. She can be a b***h! She has never bitten anyone, but she does not do well with strangers. She will bark at anything that moves (skunks, coins, dogs, people, leaves, falling sticks, etc).
They are good at being watch dogs and can be good guard dogs as well. We h e learned their barks so we know when we need to see who is at the house or just ignore them. Alone, they wouldn't be as effective, but together they are a great team!
Remember: eat it everyday!