| Clue | Source | Date |
|---|---|---|
| Hygenic (4-4) | ||
| Totally sanitised (4-4) | ||
| Seed doesn't cost anything - as a result someone must have really cleaned-up earlier on? | Irish Times Crosaire | 24 Sep 2020 |
| ... emerge from striking Old Master uncannily pure | The Telegraph Toughie | 27 Apr 2018 |
| Devoid of bacteria | ||
| Sterile | ||
| Sterilized. |