| Warning Letter — Phillips 66 / United Mart | 572701 Jan 24, 2019 |
| Warning Letter — Brown Derby | 572870 Jan 24, 2019 |
| Warning Letter — Murphy USA #7192 | 572499 Jan 24, 2019 |
| Warning Letter — Signal | 572869 Jan 24, 2019 |
| Warning Letter — Zephyr Xpress | 572501 Jan 17, 2019 |
| Warning Letter — Bucky's Express / BP | 572481 Jan 17, 2019 |
| Warning Letter — SHELBY'S | 572483 Jan 17, 2019 |
| Warning Letter — Overland Food Mart Liquor And Cigarettes | 572482 Jan 17, 2019 |
| Warning Letter — Save More Mini Mart | 572063 Jan 17, 2019 |
| Warning Letter — Goose Creek Market N Pub | 571876 Jan 10, 2019 |
| Warning Letter — Hy-Klas Foods | 572017 Jan 10, 2019 |
| Warning Letter — Harps Food Store #283 | 572024 Jan 10, 2019 |
| Warning Letter — S And R Convenience Center / Conoco | 572015 Jan 10, 2019 |
| Warning Letter — Ozarks Vapor | 571956 Jan 10, 2019 |
| Warning Letter — Jiffy Jim's Grocery | 572023 Jan 10, 2019 |
| Warning Letter — STL Smoke Shop | 572014 Jan 10, 2019 |
| Warning Letter — Kwik Korner | 572016 Jan 10, 2019 |
| Warning Letter — Circle K/Phillips 66 | 571878 Jan 10, 2019 |
| Warning Letter — State Line Store | 571879 Jan 10, 2019 |
| Warning Letter — Cheap Smokes | 571877 Jan 10, 2019 |
| Warning Letter — Brown Derby | 571880 Jan 10, 2019 |
| Warning Letter — Casey's General Store 2243 | 571568 Jan 3, 2019 |
| Warning Letter — Double L Country Store | 571569 Jan 3, 2019 |
| Warning Letter — BP | 571703 Jan 3, 2019 |
| Warning Letter — Dollar General Store #7460 | 571571 Jan 3, 2019 |
| Warning Letter — Country Mart Express/ Cenex | 571570 Jan 3, 2019 |
| Warning Letter — Casey's General Store | 571365 Dec 27, 2018 |
| Warning Letter — Walgreens | 571181 Dec 20, 2018 |
| Warning Letter — C-Barn / Phillips 66 | 570697 Dec 20, 2018 |
| Warning Letter — Roy's Convenience Stores | 571101 Dec 20, 2018 |
| Warning Letter — King Food Saver | 571104 Dec 20, 2018 |
| Warning Letter — Country Market | 571102 Dec 20, 2018 |
| Warning Letter — Duckees Drive Thru | 571266 Dec 20, 2018 |
| Warning Letter — Du Bowl Lanes | 570698 Dec 20, 2018 |
| Warning Letter — Thomas Quick Stop | 570760 Dec 13, 2018 |
| Warning Letter — PHILLIPS 66 / ARCHIE | 570516 Dec 13, 2018 |
| Warning Letter — PHILLIPS 66 | 570586 Dec 13, 2018 |
| Warning Letter — Roy's Convenience Store 10 | 570517 Dec 13, 2018 |
| Warning Letter — Sherry's | 570585 Dec 13, 2018 |
| Warning Letter — Mace Supermarket | 570759 Dec 13, 2018 |
| Warning Letter — BP/SHOP | 570111 Dec 6, 2018 |
| Warning Letter — Discount Smokes | 570152 Dec 6, 2018 |
| Warning Letter — 214 Liquor | 570321 Dec 6, 2018 |
| Warning Letter — Thriftway | 570258 Dec 6, 2018 |
| Warning Letter — Party Shack | 570110 Dec 6, 2018 |
| Warning Letter — Brown Derby | 569715 Nov 29, 2018 |
| Warning Letter — Greenhouse Vapes | 569545 Nov 29, 2018 |
| Warning Letter — Dollar General #842 | 569975 Nov 29, 2018 |
| Warning Letter — THE CORNER STORE / RUSH HOUR | 569974 Nov 29, 2018 |
| Warning Letter — North Side Quick Stop | 569971 Nov 29, 2018 |