Golden Spoon you shouldn't use the radio shopping show for advertisement if you are going to be so picky about the way people use the coupons.
The whole reason for advertising is to get new patrons. If you are going to tell patrons they can't use the coupons because this is already on special (like the quart this month) then you just should not advertise golden spoon with the coupons.
If someone comes in with a coupon (that they already paid money for by the way) and they can't use it the same as cash (which is what the radio people advertise), and using it turns into the biggest hassle ever, and the clerk is giving you the evil eye and has to call the manager for approval (of a yogurt purchase) then what is the point of having the coupons in the first place....oh yeah to bring in new customers. Ok customer came in, then they never come back.
In the end you lose the customer for life.