Calming Pops provide 20 to 40 minutes of play, with the added benefit of natural calming agents like passion flower, tryptophan, and magnesium to decrease stress during thunderstorms, fireworks, and travel days. All Pops are long-lasting, mess-free, and made with the highest-quality ingredients right here in the USA. | Woof Calming Peanut Butter and Beef Recipe Wellness Pops Dog Treats | Size Large