Stop your dogs from barking with effective bark control collars. Popular bark collar brands including Petsafe, Innotek, Sportdog, D.T. Systems, and more are available at PetFenceUSA. Bark collars are safe, effective training aids that control your dog's barking behavior. Some bark collars pick up the vibrations from your dog's vocal chords as it barks. Others are activated by your dog's barking noises.