For a limited time, you can get a FREE Gain Fireworks Sample at the Freeosk vending machine at select Sam's Club stores. Just scan your Sam's Club membership card at the Freeosk to grab your sample pack. Walmart will have a FREE Glad ForceFlexPlus with Clorox Bags Sample at select stores. Scan the QR code on the Freeosk screen with the Walmart app then place your phone in the scan zone below the Freeosk screen to get your sample. Click here to see if your store is participating.