SONIC Drive-In: 4pc Mozzarella Sticks for 99¢ All Day on April 12

4-Piece Mozarella Sticks for just 99¢

4-Piece Mozarella Sticks for just 99¢ - MMMOZZ STICKS! All Day Thursday, April 12th, Sonic will be offering a 4-Piece Mozarella Sticks for just 99¢ — no coupon needed. Tax not included. Valid only on April 12, 2018, at participating SONIC Drive-In locations while supplies last. You can also get a Free Medium Slush when you download the SONIC App and create an account.