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Cook County, IL Public Health Rules: Bed-Bug Rules (2026)

Some Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified August 2026

Key Facts

Treatment start deadline
10 days after report
Record retention
3 years, inspectable
Applies to
Countywide rental units
Excludes
Cities with own tenant ordinance, e.g. Chicago

Summary

County landlords must eliminate bed bug infestations using a licensed pest control professional and keep three years of treatment records.

City-specific rules exist: Oak Park, and Chicago have their own bed-bug rules rules that differ from Cook County's county-level regulations. If you live in one of those cities, check the city-specific page instead.

The landlord has an obligation to maintain the premises free from bed bugs. ... In any rental dwelling unit in which an infestation of bed bugs is found or reasonably suspected, it is the responsibility of the landlord to: a. Provide pest control services by a pest management professional until such time that no evidence of bed bugs can be found and verified; b. Maintain a written record of the pest control measures ... for three years ...

Source: Illinois Structural Pest Control Act 225 ILCS 235View official code

Full Breakdown

Under the Residential Tenant and Landlord Ordinance, a Cook County landlord must give every prospective and current tenant the EPA bed bug pamphlet and, once an infestation is found or reasonably suspected, hire a pest management professional to treat the unit -- and, in multi-unit buildings, the units on either side and directly above and below -- until no evidence remains. Treatment must start within ten days of a report, and records of the pest control work must be kept for three years and made available to county health and buildings staff. The ordinance covers dwelling units countywide but excludes municipalities, such as Chicago, that have adopted their own comparable landlord-tenant ordinance covering the same rights and remedies.

Violations & Fines

Landlord who ignores a bed bug notice for two business days after written notice of breach lets the tenant terminate the lease and recover one month's rent or actual damages plus attorney's fees.

Frequently Asked Questions

Does this apply to my apartment in Chicago?
No. Chicago has its own residential landlord-tenant ordinance, so Cook County's Article IV -- including the bed bug rule -- does not reach units there.
How fast must my landlord act after I report bed bugs?
Within ten days of a written report, the landlord must have a licensed pest management professional begin treatment, per Sec. 42-110(d)(4).

Sources & Official References

Other rules in Cook County

All Cook County rules

Compare Cook County to another location·View the Illinois public health rules overview

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Bed-Bug Rules in Cities Across Cook County