| Clue | Source | Date |
|---|---|---|
| Growth-killing substance (9) | Puzzler | 10 Sep 2025 |
| Chemical that destroys spore-bearing organisms (9) | ||
| Mould-destroying substance | Mirror Tea Time | 06 Mar 2025 |
| Mould-destroying substance | Mirror Tea Time | 23 Oct 2024 |
| Mould-destroying substance | Mirror Tea Time | 23 Jun 2024 |
| chemical that spores abhor | ||
| Jojoba oil is a natural one |