We have just been going through barking dogs that got into the habit of non stop barking. And so we bought dog barking collars that make a noise and used those on them and then we also have been saying NO BARK! They don't like the collars and so they learned very quickl to not bark. If we see they are going to run out just to bark we will say to them NO BARK very firmly to them. And if they are barking outside, we say NO BARK. and if they continue we will say do you want the collar and the male stops right away. We also do it when are driving and they start up, we say NO BARK. We are happy how fast they are learning.