During Passover one is not allowed to own any Chometz (leavened products). As such there is a tradition that before the holiday we appoint the Rabbi to "sell" the Chometz on our behalf.
The Sale of Chametz through Chabad of North Fulton for 2019 has ended. However you can still sell your Chametz online at the central Chabad website by clicking here https://www.chabad.org/holidays/passover/sell_chometz_cdo/sc/passover_home_button