I know this page looks like Spam Central, but it's a legitimate offer from Procter & Gamble giving away a free Febreze Plug-In at Walmart through 5/14/21. Seriously, who designed this page and why were they only given a $5 budget?
Enter a phone number that can receive texts and you'll be sent a direct link to the coupon. I used my free Google Voice number and it worked just fine. When you click the link, you'll get a unique page with a hidden barcode. Once you're at Walmart and ready to check out, reveal the barcode and scan it from your phone like you would a coupon!
The fine-print says this is only redeemable for a free Febreze Plug-in version 0-03700-0769805.