Help your furry friend find peace and calm with Tranquil Tails Calming Pheromone Diffuser Unscented Refill Pads for Dogs. These specially designed pads are made for use with the Tranquil Tails Waterless Aromatic Pheromone Vaporizer/Diffuser (sold separately). When used together, these pads disperse a soothing blend of pheromone isolates that can help ease stress and anxiety caused by separation, thunderstorms, fireworks, and other stressful situations. With 28 pads in each pack, you can provide your pup with more than two months of relief. Made in the USA by a small, veteran-founded business, these pads are free of chemical additives and are available in a variety of scents for both kitties and pups.