| Clue | Source | Date |
|---|---|---|
| Drained lake, every weed regularly pulled out | The Times Cryptic | 14 Feb 2024 |
| Percolated | Newsday | 08 Apr 2018 |
| Removed by percolating | Jonesin | 08 Mar 2016 |
| Dissolved out by percolation | ||
| Percolated | ||
| Percolated | ||
| Removed by percolating | ||
| Dissolved and washed away. |