BRC Title 6 property-maintenance and nuisance provisions require Boulder owners and tenants to keep premises free of rodent harborage. Boulder County Public Health investigates infestation complaints and can order abatement.
Boulder Revised Code Title 6 (Health, Safety, and Sanitation) treats rodent infestations as a public-health nuisance. Property owners must store trash in rodent-proof containers, eliminate harborage in woodpiles and overgrown vegetation, and seal openings to structures larger than one-quarter inch. Boulder County Public Health responds to complaints involving Norway rats, roof rats, deer mice, and pack rats — the latter two being concerns for hantavirus. Inspectors prefer integrated pest management (snap traps, exclusion) and discourage rodenticides that secondarily poison foxes, owls, and raptors. Cool Boulder's pollinator-and-wildlife focus aligns with this guidance. Confirmed infestations affecting neighboring parcels can trigger a written abatement order with a 10-30 day cure period.
Failure to abate a rodent infestation after notice from Boulder County Public Health or city code-enforcement can result in nuisance citations, daily fines, and city-performed abatement billed to the owner.
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