A Reddit user reports flea bites from Lake Merritt's grass, but Oakland has no official flea advisory or dedicated funding for park pest control, while county vector control finds disease-carrying fleas in urban wildlife nearby.

At Lake Merritt, the grass that draws picnickers and joggers is drawing something else too: fleas. A Reddit user posted Tuesday about finding fleas after sitting on the lawn near Oakland's 155-acre saltwater lagoon, describing bites on an ankle left exposed off a blanket, then more after running through the grass.

Oakland Parks and Recreation hasn't issued any public advisory about flea infestations at Lake Merritt in 2026, and no specific line item for flea management appears in the city's adopted FY23–25 or proposed FY25–27 budgets. The city did issue a request for qualified vendors in January 2026 for Lake Merritt cleanup services, but the contract focuses on aquatic vegetation, algae, and debris removal—not pest control.

The Lake Merritt Institute holds the current "Clean Lake" contract worth up to $697,500 over three years, ending June 30, 2026, but their work centers on water quality, not grass maintenance.

Meanwhile, Alameda County Vector Control Services District, which monitors flea-borne diseases countywide, tested 1,345 fleas in 2025 and found 15 out of 101 sampled urban mammals—mostly opossums and raccoons—hosted cat fleas carrying Rickettsia, the bacteria that causes flea-borne typhus. The agency doesn't have direct enforcement power over city-maintained parks like Lake Merritt.

The city granted itself a limited exemption to its Integrated Pest Management policy in 2025 to allow algaecides at Lake Merritt, but that exemption targets water treatment, not lawn pests.

For now, the grass at Lake Merritt remains open, with no official warnings posted. The Reddit post suggests some visitors are learning the hard way to keep blankets tucked and ankles covered.