Stop scratching, spraying, problem barking, destructive chewing, fear of loud noises, separation anxiety, and many other negative behaviors. ThunderEase Calming Pheromones mimic a motherโs natural nursing pheromones for natural, drug-free calming. ThunderEase is vet-recommended and clinically proven to be over 90% effective. From the makers of ThunderShirt, the most trusted brand in pet anxiety products!