In North County San Diego, weed control is common around homes, HOAs, rental properties, and landscaping crews. Many people first connect their illness to weed killer after noticing that they (or a family member) were exposed through:
- Home or rental yard maintenance (driveways, patios, side yards, walkways)
- Landscaping or lawn service work on schedules that overlap with symptoms
- Community/common-area applications where product use isn’t always documented for tenants
Because these exposures are often handled by routine contractors or property managers, the early challenge isn’t usually “whether weed killer exists”—it’s pinning down exactly what was used, where, and when.


