Seems like I can only use the coupon on non food stuffs....cleaning supplies, paper, etc. I'm retired and live alone so I don't really buy a lot of canned/prepared foods which seems to be what the bulk of coupons offer. I too buy a lot of fresh veggies/fruits and of course you never get coupons for those. I save my coupon inserts in the paper and give to my daughter who has children and can use them.
I save the most when I shop the buy one/get one specials where I can only buy one at half price, now that is the savings !