Pet smart, a primer
For example, suppose a seven ounce bag of Purina Dog Chow usually costs seven dollars. Searching online, you find a dog food coupon for a free bag of three ounce Purina Dog Chow. Or maybe you find a coupon for one dollar off a seven ounce bag. Using that coupon at a store that is having a sale on that brand for five dollars and offers double coupons will allow you to buy that bag for only three dollars. That is a small price to pay to try a new brand of dog food.