Through June 27th, you can get a FREE 20 oz Hunt's Ketchup or Assorted Size Fresh Finds Mustard at your local Big Lots store with the new BIG Rewards offer automatically loaded to Rewards accounts. To redeem, present your Rewards card to the cashier or provide the phone number associated with your BIG Rewards account. While supplies last. If you're not already a BIG Rewards Member, click here and sign up for free.