Almost all coupons will contain a code of numbers called a UPC. Products also contain UPC codes. Generally if the first five numbers of the UPC coupon code match with the first five numbers of the UPC product code, than the coupon can be redeemed for those products.
Unfortunately many times the cashiers will go only by the pictures on the coupons, but it is worth a try. If you have the correct sizes and amounts required to use the coupon and it scans, generally the store will accept the coupon.

