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MD Rodent Control

Rodent Control in Towson, MD

In Towson, rats are a matter of Baltimore County law, and that law runs on a clock that starts when the county sends a written notice under Section 13-7-305. This page sets out that clock, the county's Rat Eradication Program with its ribbons on fences, and where removal of rats and mice and sealing their way in fit around both.

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Statewide rules and background: Maryland rodent guide

County rules, and a pro for your own property

Towson is the seat of Baltimore County, and the county's rodent control rules, Sections 13-7-301 to 13-7-315, set what an owner or occupant must do about rats and mice.

County rat rules and the homes they cover

The clock after a written rat notice

Baltimore County's rat rules turn on a written notice. Once the county sends one under Section 13-7-305, the owner or occupant has a timed duty, and the rows below show who must act and by when.

Situation: The county notifies the owner or occupant in writing of evidence of rat infestationWho must act: The owner or occupant starts eradication immediately and keeps it up until the building is free of rats and the county finds no evidence leftCode section: 13-7-305
Situation: No eradication measures are taken within 5 days after that notice arrivesWho must act: The owner or occupant who failed to act is guilty of a misdemeanorCode section: 13-7-305
Situation: The county orders rat harborage removedWho must act: The owner or occupant, within the time the notice states, which may not be less than 15 days; a written extension is possibleCode section: 13-7-306
Situation: A rat-proofing orderWho must act: The owner, within the stated time (at least 15 days), seals openings rats can climb or burrow to with gnaw-proof material, except openings the building needs; the County Health Officer and Building Engineer approveCode section: 13-7-307

Under Section 13-7-301(f), owner also means a lessee whose lease makes them responsible for maintenance and repair, and in these rules a mouse counts as a rat. Section 13-7-308 bars anyone, a contractor or utility company included, from leaving rat-proofing removed without restoring it.

When the county treats a whole neighborhood

Baltimore County also runs a community Rat Eradication Program, requested through community associations.

  • The association asks first: The association emails Code Enforcement with the neighborhood name, a contact, the boundaries and the trash pickup day, and the county surveys the area. Many cases are handled with education and code enforcement, so not every neighborhood gets extermination.
  • Only properties showing rats: Where Code Enforcement goes ahead with treatment, only properties with visible signs of rats are treated, by a licensed extermination company under county contract, and posted signs give the start date.
  • Opting out: A resident who does not want the treatment can opt out with a Baltimore County waiver form.

The county's rat page reminds residents that Sections 13-7-305 and 13-7-306 make each of them responsible for keeping their own property free of rat harborage. To report another property, file the county's online complaint with the exact address. A neighborhood without a community association that wants the eradication program can call 410-887-3351.

Bigger buildings, more renters, older homes

About 22.3% of Towson's housing units are in buildings of 20 or more units, against 7.5% in Baltimore County. Counting every building of 5 or more units, the share rises to about 38.2%, against 25.1% county-wide.

  • About 44.4% of Towson's occupied homes are rented, against 33.6% in Baltimore County, so most are still lived in by their owners.
  • About 42.1% of units were built before 1960, against 32.1% in Baltimore County, while only about 14.3% date from 1980 to 1999, against 26.2% in Baltimore County.
  • Every rental needs a Baltimore County rental license or an exemption before a tenant moves in, and a license runs 3 years.
  • A building of 7 or more units or an apartment complex may skip the home inspector only with fewer than 3 fully adjudicated health and safety violations in 3 years, none under appeal; pests, rats or mold count as one.

For rental housing, Livability Code Section 35-5-206(e) puts extermination on the owner before renting where needed, on the tenant of a single-unit structure, and on the owner or operator of a structure with two or more units, unless the tenant's failure to take reasonable action caused the infestation inside the unit.

Feed, piles and cans outdoors

  • Store feed covered: Under Section 13-7-310, animal and bird feed that rodents could eat must be stored in covered rat-proof containers.
  • Feed without feeding rats: Section 13-7-310 bars feeding animals or birds so the food becomes a rodent food source. Feeding an ear-tipped feral cat under the county's TNR guidelines is not a nuisance unless it harms public health, safety, welfare or the environment.
  • Piles that shelter rats: Section 13-7-312 bars letting lumber, brush, leaves and similar materials pile up where they are conducive to a rat harborage. Material stacked evenly on open racks at least 18 inches off the ground is exempt.
  • Rodent-resistant cans: Section 13-4-201 calls for garbage in rodent-resistant, watertight containers with tight lids. Under county collection rules, lids may not be tied on, and cracked cans are not replaced by the county.

Matching the job to the building

  • Rat Extermination

    About 33.7% of Towson's housing units are detached single-family houses. If a county rat notice has arrived, show it to the pro at the first visit, since Section 13-7-305 expects eradication to start immediately.

  • Mouse Extermination

    About 22.3% of Towson's housing units are in buildings of 20 or more units. If you rent in one and mice appear, Section 35-5-206 in the Livability Code note above shows when the owner or operator must exterminate, so bring the manager in before booking.

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Common Questions About Towson Rodent Control

  • Right away. Section 13-7-305 expects eradication to start immediately after the county's written notice and to continue until no evidence of rats remains. The notice table above shows who must act and the deadline after which doing nothing becomes a misdemeanor. Book an inspection the day the letter arrives, and keep the pro's written records of what was done.

  • Sections 13-7-305 and 13-7-306 make you responsible for keeping your own property free of rat harborage, and if you find rats there, the county's rat page says "it is recommended that you consult with a professional exterminator." The county's contracted treatment is part of the neighborhood Rat Eradication Program, which a community association requests, or a neighborhood without one by calling 410-887-3351. The exterminator treats only properties with visible signs of rats and ties a red ribbon to the fence where it treated and a yellow one where it found no rat activity, so a yellow ribbon next door says nothing about your own yard.

  • Use Baltimore County's public Rental Registration Property Search, which shows whether a property is licensed. Under the county's rental licensing rules, Sections 35-6-105 to 35-6-108, a rental needs a license or an exemption before a tenant moves in, and the Rental Registration office is at 410-887-6060.

  • The scope differs. In an apartment, the plan should say whether shared areas and neighboring units are included, and Section 35-5-206 in the rental note above shows who must exterminate. At a detached house, ask for the yard and any stored feed, which Section 13-7-310 covers, to be checked along with the inside of the home.

Free Towson Rodent Inspection

What happens next

  1. Call and describe what you have seen and where.
  2. A trusted local pro can set up an inspection and confirm whether you have rats or mice.
  3. Ask them to explain trapping, removal and sealing, and what the work involves, before any work starts.
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Sources

  1. Baltimore County Code Article 13, Title 7, Subtitle 3: Rodent Control (13-7-301 to 13-7-315). Baltimore County, Maryland (via Municode Library; Supp. No. 29, codified through Bill No. 20-26). Retrieved 2026-09-27.
  2. Rat Control and Treatment Program. Baltimore County Government, Department of Permits, Approvals and Inspections. Retrieved 2026-09-27.
  3. Baltimore County, Maryland - Government. Maryland Manual On-Line, Maryland State Archives. Retrieved 2026-09-27.
  4. B25024: Units in Structure, 2024 ACS 5-Year Estimates Detailed Tables (Towson CDP). U.S. Census Bureau, American Community Survey 5-Year Estimates. Retrieved 2026-09-27.
  5. B25024: Units in Structure, 2024 ACS 5-Year Estimates Detailed Tables (Baltimore County). U.S. Census Bureau, American Community Survey 5-Year Estimates. Retrieved 2026-09-27.
  6. B25003: Tenure, 2024 ACS 5-Year Estimates Detailed Tables (Towson CDP). U.S. Census Bureau, American Community Survey 5-Year Estimates. Retrieved 2026-09-27.
  7. B25003: Tenure, 2024 ACS 5-Year Estimates Detailed Tables (Baltimore County). U.S. Census Bureau, American Community Survey 5-Year Estimates. Retrieved 2026-09-27.
  8. B25034: Year Structure Built, 2024 ACS 5-Year Estimates Detailed Tables (Towson CDP). U.S. Census Bureau, American Community Survey 5-Year Estimates. Retrieved 2026-09-27.
  9. B25034: Year Structure Built, 2024 ACS 5-Year Estimates Detailed Tables (Baltimore County). U.S. Census Bureau, American Community Survey 5-Year Estimates. Retrieved 2026-09-27.
  10. Baltimore County Code Article 35, Title 6, Subtitle 1: Rental Housing Licenses. Baltimore County, Maryland (via Municode Library; Supp. No. 29, codified through Bill No. 20-26). Retrieved 2026-09-27.
  11. Rental Housing Registration. Baltimore County Government, Department of Permits, Approvals and Inspections. Retrieved 2026-09-27.
  12. Baltimore County Code Article 35, Title 5 (Livability Code), Subtitle 2: Rental Property. Baltimore County, Maryland (via Municode Library; Supp. No. 29, codified through Bill No. 20-26). Retrieved 2026-09-27.
  13. Regulation for Baltimore County Residential Trash and Recycling Collection (2025). Baltimore County Government, Bureau of Solid Waste Management. Retrieved 2026-09-27.
  14. Collection Set-Out Guide. Baltimore County Government, Department of Public Works and Transportation. Retrieved 2026-09-27.
  15. Baltimore County Code Article 13, Title 4: Solid Waste (13-4-201 Method of solid waste storage). Baltimore County, Maryland (via Municode Library; Supp. No. 29, codified through Bill No. 20-26). Retrieved 2026-09-27.

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