| Warning Letter — KINGSVILLE FASTOP / PHILLIPS 66 | 558804 Jul 5, 2018 |
| Warning Letter — Save A Lot | 558813 Jul 5, 2018 |
| Warning Letter — Casey's General Store #3 | 558802 Jul 5, 2018 |
| Warning Letter — SMOKERS OUTLET INC. | 558666 Jul 5, 2018 |
| Warning Letter — Sinclair / Amerimart | 558934 Jul 5, 2018 |
| Warning Letter — Rush Hour | 558803 Jul 5, 2018 |
| Warning Letter — Wal-Mart Supercenter 80 | 558801 Jul 5, 2018 |
| Warning Letter — Twisted-E-Liquid Vape Shop | 558817 Jul 5, 2018 |
| Warning Letter — Discount Smoke Shop | 558664 Jul 5, 2018 |
| Warning Letter — Casey's General Store | 558333 Jun 28, 2018 |
| Warning Letter — PARKSIDE MINI MART / SINCLAIR | 558335 Jun 28, 2018 |
| Warning Letter — Discount Smoke Shop | 558334 Jun 28, 2018 |
| Warning Letter — Gateway To Branson Travel Stop/Conoco | 558332 Jun 28, 2018 |
| Warning Letter — DISCOUNT SMOKE SHOP | 557953 Jun 28, 2018 |
| Warning Letter — HyVee 2 Gas | 558404 Jun 28, 2018 |
| Warning Letter — Casey's General Store | 558125 Jun 28, 2018 |
| Warning Letter — Koko Vapors | 557952 Jun 28, 2018 |
| Warning Letter — Cheap Smokes | 557375 Jun 21, 2018 |
| Warning Letter — BP / JOLLY'S CONVENIENCE STORE | 557378 Jun 21, 2018 |
| Warning Letter — Price Express Cutter | 557459 Jun 21, 2018 |
| Warning Letter — Minit Mart | 557376 Jun 21, 2018 |
| Warning Letter — Break Time 3112 | 557379 Jun 21, 2018 |
| Warning Letter — Clark | 557582 Jun 21, 2018 |
| Warning Letter — VP Racing Fuels / The Pit Stop | 557581 Jun 21, 2018 |
| Warning Letter — Schnucks | 557374 Jun 21, 2018 |
| Warning Letter — Macadoodles | 557660 Jun 21, 2018 |
| Warning Letter — Price Cutter | 557373 Jun 21, 2018 |
| Warning Letter — Hy-Vee Gas | 557584 Jun 21, 2018 |
| Warning Letter — Gerbes | 557664 Jun 21, 2018 |
| Warning Letter — Brown Derby | 557580 Jun 21, 2018 |
| Warning Letter — Casey's General Stores | 557377 Jun 21, 2018 |
| Warning Letter — Phillips 66 / Petro-Mart | 556760 Jun 14, 2018 |
| Warning Letter — The Cellar | 556947 Jun 14, 2018 |
| Warning Letter — CUTTER AND CORK | 556757 Jun 14, 2018 |
| Warning Letter — Casey's | 556949 Jun 14, 2018 |
| Warning Letter — Walgreens Drug Store | 556753 Jun 14, 2018 |
| Warning Letter — FOOD GIANT 549 | 556755 Jun 14, 2018 |
| Warning Letter — BP / Bucky's | 557064 Jun 14, 2018 |
| Warning Letter — Dollar General Store #11777 | 556754 Jun 14, 2018 |
| Warning Letter — Freedom Stop / Phillips 66 | 556758 Jun 14, 2018 |
| Warning Letter — Casey's General Store | 556945 Jun 14, 2018 |
| Warning Letter — BP | 557068 Jun 14, 2018 |
| Warning Letter — Casey's General Store | 557072 Jun 14, 2018 |
| Warning Letter — RHODES FAMILY PRICE CHOPPER | 557076 Jun 14, 2018 |
| Warning Letter — CONOCO | 557066 Jun 14, 2018 |
| Warning Letter — Country Mart | 556756 Jun 14, 2018 |
| Warning Letter — Harter House Supermarket 02246 | 556759 Jun 14, 2018 |
| Warning Letter — NEWSTEAD SUPER MARKET AND GRILL | 556306 Jun 7, 2018 |
| Warning Letter — Dollar General | 556183 Jun 7, 2018 |
| Warning Letter — Petro Mart 16 | 556196 Jun 7, 2018 |