Cal. Civ. Code § 37.111.1219
37.111.1219 PEST AND WEED CONTROL
Operative Text
(1) Buildings and other structures must be maintained to be kept free of harborage for, and infestations of, pests and wildlife. (2) Any extermination or control measures involving insecticides, rodenticides, or herbicides must strictly conform to the manufacturer's application instructions, and not be used within 100 feet of a drinking water well. (3) The growth of brush, weeds, grass, and other plants must be controlled within the establishment to eliminate harborage of pests. (4) The growth of ragweed, poison ivy, poison oak, poison sumac, and other similarly noxious plants must be controlled within the area of the establishment frequented by occupants.
Mont. Admin. R. 37.111.1219 establishes that buildings and their surrounding grounds must be kept free of conditions that attract or shelter pests and wildlife. Any chemical treatments—including insecticides, rodenticides, and herbicides—must follow manufacturer instructions exactly and may not be applied within 100 feet of a drinking water well. Vegetation management is also required, covering not only general brush and weed growth that could harbor pests but also specifically noxious plants such as ragweed, poison ivy, poison oak, and poison sumac in areas where occupants are present.
Plain English — not legal advice.
Under Mont. Admin. R. 37.111.1219, compliant property operators generally maintain structures to eliminate pest harborage, conduct regular inspections of grounds for weed and brush overgrowth, and schedule vegetation control in occupant-frequented areas to address noxious plants. When chemical treatments are used, operators keep records confirming that products were applied strictly per manufacturer labeling and that no application occurred within the 100-foot buffer zone around any drinking water well. Documenting these practices—dates of treatment, products used, and areas covered—supports a clear compliance record under this rule.
General guidance for property managers — not legal advice for your specific situation. Consult an attorney for advice on your case.
Mont. Admin. R. 37.111.1219 gives occupants a basis to expect that the establishment they live in is maintained free of pest infestations and that hazardous plants like poison ivy or poison sumac are controlled in areas they regularly use. If conditions appear to fall short of these standards—such as visible pest activity, uncontrolled noxious vegetation, or chemical applications that seem inconsistent with safe practices—tenants may document the conditions with photographs and written notes. General enforcement paths can include filing a complaint with the relevant local or state health authority, or reaching out to a tenant-rights organization familiar with Montana housing regulations for guidance on next steps.
General guidance for tenants — not legal advice for your specific situation. Consult a tenant-rights organization or attorney for advice on your case.
Generated October 26, 2026 — auto-generated, not yet human-reviewed. See /transparency for methodology.
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