The article discusses common mistakes made by shoppers at Menards, a major home improvement retailer like Home Depot and Lowe's that often confuse shoppers. The company's 11% off discount promotion is not an immediate price cut at the point of sale, but a deferred discount, which requires customers to pay the full, regular price for their items upfront. To claim this discount, customers need to submit a physical rebate form and mail it through mail-in rebate process via a special P.O. Box in Elk Mound, Wisconsin. If you misplace or accidentally toss out your physical rebate receipt, Menards has a simple digital way to get your transaction details back if you paid with a credit card, debit card, or even a check. However, if you lose the physical receipt, it's easy to assume it's lost. The retailer also offers a store merchandise credit check rather than cash or credit to your payment card. Menards' Ray's List section, named after founder Ray Menard, is a clearance goldmine for items purchased within 14 days before the sale, which can save significant amounts of money.