| Warning Letter — H2GO / THE HOOKAH SHOPPE | 659581 May 23, 2023 |
| Warning Letter — Casey's General Store | 659593 May 23, 2023 |
| Warning Letter — CIRCLE K | 659488 May 23, 2023 |
| Warning Letter — 7-Eleven | 659479 May 23, 2023 |
| Warning Letter — A1 Liquors | 659604 May 23, 2023 |
| Warning Letter — MURPHY USA | 659602 May 23, 2023 |
| Warning Letter — Circle K / Shell | 659480 May 23, 2023 |
| Warning Letter — Mobil / Mobil Mart | 659477 May 23, 2023 |
| Warning Letter — Shell / Food Mart | 659469 May 23, 2023 |
| Warning Letter — Vape Monkeys | 659580 May 23, 2023 |
| Warning Letter — BINNY'S BEVERAGE DEPOT | 659603 May 23, 2023 |
| Warning Letter — Shell / Food Mart | 659471 May 23, 2023 |
| Warning Letter — Ole Liquor Cabinet | 659588 May 23, 2023 |
| Warning Letter — Mach 1 / Phillips 66 | 659483 May 23, 2023 |
| Warning Letter — Tobacco Plus Cigar | 659594 May 23, 2023 |
| Warning Letter — Walgreens | 659627 May 23, 2023 |
| Warning Letter — Jay's Mini Mart | 659174 May 18, 2023 |
| Warning Letter — Cigarette Shop | 659276 May 18, 2023 |
| Warning Letter — Shell / Pop N Place | 659279 May 18, 2023 |
| Warning Letter — Speedway 7765 | 659280 May 18, 2023 |
| Warning Letter — Exxon | 659069 May 16, 2023 |
| Warning Letter — SHELL / POP N PLACE | 659110 May 16, 2023 |
| Warning Letter — Fuller's Gas / Market | 659112 May 16, 2023 |
| Warning Letter — The Landing | 658968 May 16, 2023 |
| Warning Letter — CASEY'S GENERAL STORE | 659085 May 16, 2023 |
| Warning Letter — Western Liquors Wine And Spirits | 659070 May 16, 2023 |
| Warning Letter — CIRCLE K / SHELL | 659111 May 16, 2023 |
| Warning Letter — Speedway | 659108 May 16, 2023 |
| Warning Letter — JACK FLASH / PHILLIPS 66 | 658965 May 16, 2023 |
| Warning Letter — HollyWood 21 | 658966 May 16, 2023 |
| Warning Letter — Curly's Corner Market | 659109 May 16, 2023 |
| Warning Letter — Marathon | 658935 May 16, 2023 |
| Warning Letter — HIPPIE SPIRIT | 659086 May 16, 2023 |
| Warning Letter — Shell | 659068 May 16, 2023 |
| Warning Letter — Mobil / KR Convenience | 658805 May 11, 2023 |
| Warning Letter — Seward Boco | 658801 May 11, 2023 |
| Warning Letter — Walgreens | 658840 May 11, 2023 |
| Warning Letter — Airport Mini Mart / BP | 658806 May 11, 2023 |
| Warning Letter — Luv 2 Smoke | 658804 May 11, 2023 |
| Warning Letter — JTA Foods | 658585 May 9, 2023 |
| Warning Letter — TOORS / CITGO | 658635 May 9, 2023 |
| Warning Letter — Tobacco Country | 658627 May 9, 2023 |
| Warning Letter — WESSEL'S GROCERY/FAST STOP | 658462 May 9, 2023 |
| Warning Letter — Jay's | 658746 May 9, 2023 |
| Warning Letter — Mach 1 / Phillips 66 | 658587 May 9, 2023 |
| Warning Letter — Marathon | 658586 May 9, 2023 |
| Warning Letter — Jack Flash Travel Center | 658499 May 9, 2023 |
| Warning Letter — 7 ELEVEN / MOBIL | 658626 May 9, 2023 |
| Warning Letter — Vapes & Tobacco | 658502 May 9, 2023 |
| Warning Letter — Exotic Leaf | 658582 May 9, 2023 |