Place the PetSafe Comfort Fit Bark Control Collar on your dog’s neck. When your dog barks, a harmless Static Correction is emitted. There are six levels of self adjusting correction for the standard bark collar and eighteen levels of correction for the deluxe bark control collar. The bark collar automatically adjusts the level of Static Correction to your dog’s temperament. It will stop barking dogs. This Comfort Fit bark control collar features the QuickFit buckle that provides a quick release and a perfect fit every time. This Comfort Fit bark control collar is 100% waterproof and has a Lifetime Limited Warranty. The deluxe 18 level bark collar senses the vibrations in your dog's throat that happen only during barking. This prevents false corrections from other dogs barking. These PetSafe Comfort Fit Bark Control Collars are recommend for any dog over 15 lbs. If you have a smaller dog try our Little Dog Bark Control Collar located here: It's durable yet light-weight collar is 100% waterproof and adjustable to fit any dog over 15 pounds. Use the deluxe 18 level bark collar if you have two or more dogs together. The Deluxe 18-level collar senses vibrations from the dog wearing the bark collar and will not correct him in error if other dogs are barking. Stop barking dogs today with a PetSafe bark control collar.