I use coupons. My problem is that most of the coupons in our newspaper inserts are for crap: drugs, hair color, expensive cosmetics, things like that. Not crap to some people, but certainly to me. I need more coupons for foods (frozen vegetables, canned goods, some condiments, etc.) More in the way of cat food and litter coupons.
I go through the store flyers to see what's on sale. Then I go through my coupon box to try to match the coupons with the items.
Know what really fries my chickens? A $1.00 coupon for Tide, BUT I have to buy two or three containers to get that $1.00 off. I don't know about the rest of the you, but I don't have the money for 2-3 containers of Tide at one time. I simply don't have it. The other week, I had a $1.00 coupon for Reynolds Wrap foil. But it was only good for 50 square feet or more....and I had to buy two packages. At almost $4.00 each. I don't have $8 to spend on foil. I bought the store brand and saved more money anyway than if I would have used the coupon. (I've used it and it works fine, too.)
For some canned vegetables, like kidney beans, for example, I'll use the store brands when they go on sale. Same with things like foil. At this point, I have virtually no brand loyalty anymore.