DOG STOP! Combines sound and smell that affects Dog's highly developed senses for instant behavior modification results. Produces a unique hiss type warning sound infused with a hint of natural citrus smell that is pleasant to humans but not dogs. Safe and humane effective pet training tool. STOPS, Barking, Jumping up, Stealing of food, Pet-to-pet confrontations, Unwanted use of furniture and much more! Prefect pet behavior correcting training tool that works instantly! PATENTED & MADE IN THE USA! DOG STOP! and SAFETY-SPORT are registered Trademarks of LPI Consumer Products, Inc. All rights reserved. A Revolutionary Patented Breakthrough in pet training and behavior modification! DOG STOP! Behavior & Training Tool, designed to admit a swoosh/hiss type warning sound combined with a hint of natural citrus essence that instantly corrects bad behavior! DOG STOP! and SAFETY-SPORT are registered Trademarks of LPI Consumer Products, Inc. All rights reserved.