| Warning Letter — Hookies And Bookies | 554835 May 17, 2018 |
| Warning Letter — Chevron / Food Mart | 554614 May 17, 2018 |
| Warning Letter — CARNICERIA Y TAQUERIA DURANGO | 554192 May 10, 2018 |
| Warning Letter — Food City 140 | 554232 May 10, 2018 |
| Warning Letter — Virtue Vape LLC | 553204 May 10, 2018 |
| Warning Letter — Dollar General | 554231 May 10, 2018 |
| Warning Letter — Blaze Tobacco & Gifts | 554422 May 10, 2018 |
| Warning Letter — Drive Thru Liquior | 554233 May 10, 2018 |
| Warning Letter — CHEVRON SPEEDMART | 554191 May 10, 2018 |
| Warning Letter — Chevron Food Mart | 554431 May 10, 2018 |
| Warning Letter — Smoke Shop | 554190 May 10, 2018 |
| Warning Letter — Z's Convenience | 554062 May 3, 2018 |
| Warning Letter — Lam's Oriental Seafood Market | 553955 May 3, 2018 |
| Warning Letter — QUIKTRIP | 554065 May 3, 2018 |
| Warning Letter — Oasis Vape Downtown Mesa | 554061 May 3, 2018 |
| Warning Letter — PHOENIX CAR AUDIO AND SMOKE SHOP | 553956 May 3, 2018 |
| Warning Letter — 7-Eleven | 553896 May 3, 2018 |
| Warning Letter — Chevron / Food Mart | 554063 May 3, 2018 |
| Warning Letter — Super 99 Cents | 554064 May 3, 2018 |
| Warning Letter — Nogales Market 2 | 553357 Apr 26, 2018 |
| Warning Letter — A & R Smoke Shop | 553068 Apr 19, 2018 |
| Warning Letter — Mobil | 552636 Apr 12, 2018 |
| Warning Letter — Vapor Vortex | 552635 Apr 12, 2018 |
| Warning Letter — Wal-Mart Neighborhood Market | 552328 Apr 5, 2018 |
| Warning Letter — SynCardia Systems LLC | 537226 Apr 3, 2018 |
| Warning Letter — Circle K | 552110 Mar 29, 2018 |
| Warning Letter — EASY STOP CORNER MARKET | 548763 Mar 29, 2018 |
| Warning Letter — Greenway Smoke Shop | 548579 Mar 22, 2018 |
| Warning Letter — Get The Tea, LLC. | 538965 Mar 22, 2018 |
| Warning Letter — Dollar General | 548225 Mar 15, 2018 |
| Warning Letter — Walgreens | 548083 Mar 15, 2018 |
| Warning Letter — Vape Central | 546878 Mar 15, 2018 |
| Warning Letter — Cloud Chaser Vaping Co. | 547762 Mar 8, 2018 |
| Warning Letter — Chevron | 547479 Mar 1, 2018 |
| Warning Letter — 76 | 547226 Feb 22, 2018 |
| Warning Letter — Circle K | 547077 Feb 22, 2018 |
| Warning Letter — Gourmet Vapor | 547090 Feb 22, 2018 |
| Warning Letter — Azwholeistic Organic Vape And CBD | 547228 Feb 22, 2018 |
| Warning Letter — Trend Smokes Vape & Cigar | 547227 Feb 22, 2018 |
| Warning Letter — Walgreens | 547014 Feb 22, 2018 |
| Warning Letter — Albertsons | 547311 Feb 22, 2018 |
| Warning Letter — Broadway Liquors | 547016 Feb 22, 2018 |
| Warning Letter — C-Store Express | 547043 Feb 22, 2018 |
| Warning Letter — Circle K/Shell | 547015 Feb 22, 2018 |
| Warning Letter — Shell | 546737 Feb 15, 2018 |
| Warning Letter — Family Dollar | 546799 Feb 15, 2018 |
| Warning Letter — Smoke Shop | 546481 Feb 15, 2018 |
| Warning Letter — QuikTrip | 546749 Feb 15, 2018 |
| Warning Letter — Fry's Food & Drug | 546774 Feb 15, 2018 |
| Warning Letter — Arco Am Pm | 546476 Feb 15, 2018 |