Doggie Don't The Device- Handheld Bark Deterrent and Training Aid- Loud Patented Sound Stops Barking and Other Unwanted Behaviors- Safe, Humane, No Shock STOPS NUISANCE BEHAVIORS: Stops Barking, Leash Aggression, Fighting, Nipping, Chewing, Digging, Jumping Up and Food Stealing HUMANE: Doggie Don't Produces a Loud Sound that both You and Your Pet can Hear. Doggie Don't Gets Your Dogs' Attention. Since it Does Not Shock or Spray it Will Not Harm Your Pet. EASY TO USE: If Your Dog Misbehaves, Press the Doggie Don't Button and Say Your Command. The Loud Noise Will Distract Your Dog and Stop the Unwanted Behavior. TRAINER RECOMMENDED: Trainers and Rescues Nationwide choose The Doggie Don't Device to Safely Correct Behavioral Issues. Contact Doggie Don't Inc. with any Questions or Additional Tips. ERGONOMIC DESIGN AND BATTERIES INCLUDED: Lightweight and Easy to Carry Design. Comes with 2 Lithium CR2 3.0v Batteries and a Wrist Strap. No refill cartridges needed.