Cook County DPH runs vector surveillance for rodents and mosquitos across suburban Cook, while the Illinois Structural Pest Control Act (225 ILCS 235) licenses pest operators statewide. Property owners must abate rodent harborage; suburban municipalities enforce nuisance abatement locally.
The Cook County Department of Public Health Environmental Health division operates a vector surveillance program covering rodents, mosquitos, and ticks across suburban Cook municipalities that contract with the agency. CCDPH responds to complaints, supports municipal abatement orders, and partners with the North Shore Mosquito Abatement District and other local districts. Statewide, the Illinois Structural Pest Control Act (225 ILCS 235) requires licensure of any pest control technician applying restricted-use rodenticides; uncertified homeowners may use first-generation anticoagulants and snap traps but not commercial-grade products. Property owners in suburban Cook must eliminate harborage and food sources; failure can trigger municipal nuisance citations and, in unincorporated areas, county property maintenance enforcement.
Failure to abate a rodent infestation after notice in unincorporated Cook County is a nuisance violation enforceable by daily fines under the Cook County Property Maintenance Code. Unlicensed commercial rodenticide application violates 225 ILCS 235 and brings IDPH civil penalties.
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