Planet Oat offers a free 52 oz. carton of Barista Lovers Oatmilk after rebate. Purchase the oatmilk, submit the receipt via the provided website, and receive a refund via Venmo, PayPal, or a virtual Mastercard within 72 hours. 

 To claim a free carton of Planet Oat Barista Lovers Oatmilk, purchase it before June 1, 2024, and keep the receipt. Submit the receipt online at Grab My Rebate using the specific offer code. The maximum value of the rebate is $4.99. Submissions must be received by June 15, 2024, and the refund is processed within 72 hours through Venmo, PayPal, or a virtual Mastercard. For any issues, there's a dedicated customer service number provided.