Yingsu Dog Calming Diffuser, 4 in 1 Puppy Pheromones Calming Diffuser, Relaxing Pheromone for Dogs Relief Stress Anxiety Reduce Aggression Barking, Help Train Dog to Pee, 2 Diffuser 2 Refill(48ml)Brand: Yingsu Features: Safe and Natural Pheromone Ingredients: Yingsu dog diffuser is crafted from premium all natural, non toxic, and odorless ingredients. It emulates the natural nurturing pheromones emitted by mother dogs during puppy nursing, transmitting signals of safety and comfort. This fosters a soothing and relaxing atmosphere for your dog, dispelling anxiety and restlessness. Suitable for dogs of all ages and breeds Covers Up to 700 Square