Since I began writing “Super-Couponing Tips,” I have avoided naming names. My column runs nationally, and my readers patronize many different stores, from Piggly Wiggly in Alabama to Price Chopper in Massachusetts, from Red Apple on the West Coast to Giant Eagle in the East.

But when they ask questions about coupons, my readers name names. And I receive more questions by far about coupon policies at Wal-Mart Stores Inc. than I do for any other chain. So I’ll set aside my “no names” policy to answer questions about the world’s largest grocer.

Q: Is it true that you can get cash back for a coupon overage at Walmart?

A: Absolutely! Coupon overage occurs when the value of your coupon exceeds the cost of the item you’re buying. Here’s Walmart’s policy: “If coupon value exceeds the price of the item, the excess may be given to the customer as cash or applied toward the basket purchase.”

Just this week, I purchased a 32-count bottle of aspirin at Walmart for $2.22. I had a $3 coupon for any aspirin of this brand, 20-count or larger. Since the coupon exceeded the cost of the aspirin by 78 cents, I was entitled to receive that extra money back in cash or to apply it to another item in my trip. I bought a pound of apples for 98 cents, and the register automatically applied the aspirin coupon overage to the bag of apples. I paid 20 cents for everything.

Q: Cashiers at two Walmarts refused to accept my printed Internet coupons on the grounds that the product vendor won’t repay Walmart. Is this true?

A: “Does Walmart accept printed Internet coupons?” is the most-often-asked question I get from readers about Walmart. I have a plethora of reader emails detailing various instances of a Walmart store turning down printable coupons. Once again, the answer can be found in Walmart’s coupon policy: “We gladly accept print-at-home Internet coupons.” The policy goes on to state that the printable coupons must be valid, scannable and legible.

To avoid problems print out a copy of the coupon policy from the Wal-Mart Stores Inc. corporate website (walmartstores.com) and carry it in your coupon wallet. Wal-Mart’s stores should follow the policy.

Jill Cataldo, is a coupon workshop instructor, writer and mother of three. Learn more at her website, www.jillcataldo.com. Email your own couponing victories and questions to jill@ctwfeatures.com.