Many Sunnyvale residents don’t realize they were exposed until symptoms appear months or years later. In real life, exposure may have come from:
- Treated lawns and landscaping at a nearby home, apartment complex, or commercial property
- Turf or weed-control products used along fences, pathways, and common areas
- Trackable worksite contact for people who maintain facilities, perform groundskeeping, or handle building upkeep
- Secondhand exposure—for example, residue carried on shoes, clothing, or tools after a nearby application
When the product isn’t clearly identified at the time of use, the case often hinges on how well the exposure can be reconstructed later.


