| Warning Letter — Perrier Wines & Liquor | 538864 Oct 5, 2017 |
| Warning Letter — New Superette | 538762 Oct 5, 2017 |
| Warning Letter — Marathon/Malmo Market | 538842 Oct 5, 2017 |
| Warning Letter — M&H | 538361 Sep 28, 2017 |
| Warning Letter — Sinclair | 538138 Sep 28, 2017 |
| Warning Letter — Holiday | 538139 Sep 28, 2017 |
| Warning Letter — Casey's General Store | 538280 Sep 28, 2017 |
| Warning Letter — Midwest Tobacco And Vapor | 537678 Sep 21, 2017 |
| Warning Letter — Sustad Family Market | 537911 Sep 21, 2017 |
| Warning Letter — Moose Lake Co-Op/Cenex | 537345 Sep 14, 2017 |
| Warning Letter — The eCig Shop | 537417 Sep 14, 2017 |
| Warning Letter — Mobil | 537362 Sep 14, 2017 |
| Warning Letter — Hy-Vee | 537205 Sep 14, 2017 |
| Warning Letter — Hy-Vee Gas | 536926 Sep 7, 2017 |
| Warning Letter — MORNING STAR MARKET / VICTORY | 536853 Sep 7, 2017 |
| Warning Letter — Royal Tobacco | 537040 Sep 7, 2017 |
| Warning Letter — Walgreens | 536963 Sep 7, 2017 |
| Warning Letter — Casey's General Store | 536925 Sep 7, 2017 |
| Warning Letter — Food & Fuel/BP | 536852 Sep 7, 2017 |
| Warning Letter — Walgreens | 536626 Aug 31, 2017 |
| Warning Letter — SuperAmerica | 536625 Aug 31, 2017 |
| Warning Letter — Marathon | 536412 Aug 31, 2017 |
| Warning Letter — Super Day/Clark | 536627 Aug 31, 2017 |
| Warning Letter — Smoke Shop Ecig 101 | 536478 Aug 31, 2017 |
| Warning Letter — Holiday | 536263 Aug 31, 2017 |
| Warning Letter — Ivanhoe Liquor Store | 536445 Aug 31, 2017 |
| Warning Letter — BP/Shop | 536414 Aug 31, 2017 |
| Warning Letter — Jim Paskewitz Livestock | 536312 Aug 30, 2017 |
| Warning Letter — Speedway / Supermom's | 535664 Aug 24, 2017 |
| Warning Letter — Walgreens | 535663 Aug 24, 2017 |
| Warning Letter — Blue Blaze Vapes | 535808 Aug 24, 2017 |
| Warning Letter — Caseys General Store | 535935 Aug 24, 2017 |
| Warning Letter — Brausen Arden Hills/Shell | 535810 Aug 24, 2017 |
| Warning Letter — Cub Foods | 535900 Aug 24, 2017 |
| Warning Letter — Tobacco Shop | 535975 Aug 24, 2017 |
| Warning Letter — B-Dale Corner Store/Shell | 535878 Aug 24, 2017 |
| Warning Letter — Speedway | 535937 Aug 24, 2017 |
| Warning Letter — Casey's General Store | 535502 Aug 17, 2017 |
| Warning Letter — SuperAmerica | 535455 Aug 17, 2017 |
| Warning Letter — Goodridge Municipal Liquor Store | 535287 Aug 17, 2017 |
| Warning Letter — Family Dollar | 535323 Aug 17, 2017 |
| Warning Letter — Your Korner Store Gary / Lucky Seven | 535322 Aug 17, 2017 |
| Warning Letter — Adium/Augers Motley Express | 534655 Aug 10, 2017 |
| Warning Letter — Casey's General Store | 534619 Aug 10, 2017 |
| Warning Letter — Duluth Smoke Shop | 534512 Aug 10, 2017 |
| Warning Letter — Kwik Trip | 534618 Aug 10, 2017 |
| Warning Letter — Food N Fuel | 533998 Aug 3, 2017 |
| Warning Letter — Casey's General Store | 534029 Aug 3, 2017 |
| Warning Letter — Kwik Trip | 534100 Aug 3, 2017 |
| Warning Letter — Casey's General Store | 533999 Aug 3, 2017 |