Unlike cases involving a single, easily documented incident, many people in San Bernardino County describe exposure through repeated, everyday contact. That can include:
- Home and rental property use: treating weeds along driveways, fences, and landscaping beds around residential streets.
- Worksite exposure: groundskeeping, landscaping, facility maintenance, or agricultural-adjacent work where herbicides are applied seasonally.
- Secondhand residue: contaminated work clothes, boots, gloves, or tools brought home after a shift.
- Treated vegetation contact: mowing or trimming after an area has been sprayed.
When exposure is “mixed” across settings, timing matters. A strong case typically ties together where contact happened, when it happened, which products were used, and how the illness developed.


