Potty training sprays sound like snake oil—until you watch one actually work. In this episode, Kenji Takahashi shares how his skepticism completely flipped after witnessing his sister's golden retriever puppy go from constant accidents to hitting the pad consistently within just two days. He breaks down the real science behind why these sprays work, explains the critical difference between pheromone-based and scented formulas, and helps you figure out which type matches your specific puppy's age, breed, and training situation. If you've been cleaning up messes for weeks and wondering whether these products are worth the money, this guide will save you from buying the wrong bottle.

• Pheromone-based sprays tap into hardwired canine behavior that puppies develop as early as three weeks old, making them faster and more effective than her ...