McIntyre isn't alone in using coupons to save money. According to McIntyre, coupons must be used correctly to save money. You get a 25 coupon. If your grocery routinely doubles coupons, your cost for that 16 oz. Use a coupon organizer to sort coupons.
Every week go through grocery store ads.
Find items on sale for which you have coupons. Focus on sale items only. Use the store's coupon policy to its fullest. Some routinely double or triple coupons. Jump through whatever hoops it takes.