| Clue | Source | Date |
|---|---|---|
| Rubbery substances | Wall Street Journal | 08 Aug 2020 |
| Rubber glove materials | The Washington Post | 22 Dec 2019 |
| Rubber glove materials | LA Times Daily | 22 Dec 2019 |
| Rubbery compounds | New York Times | 29 Apr 2017 |
| Rubbery compounds | ||
| Certain paints | ||
| Water-base paints | ||
| Milky liquids in some plants | ||
| Some paints | ||
| Rubber tree yields | ||
| Certain paints | ||
| Certain paints | ||
| Some house paints |