Local rodent information

Rodent control in Connecticut

Learn what to look for around your property, explore your city, and ask about an inspection or a quote.

Rodents in Connecticut: what to know

Around Connecticut

Conditions vary across the state. Choose your city below, then describe what’s happening around your home or business.

What to note

Where you see rodents, how long it has been going on, and anything you’ve already tried are the most useful details to mention.

A useful next step

Ask about an inspection, what treatment would involve, and whether follow-up visits are included. You don’t need to identify the problem yourself before getting in touch.

Local research

Rodents in Connecticut: what the public record shows

Before you compare quotes, it helps to know which rodents actually live in Connecticut, when they are busiest, and what the state figures look like. Everything below links to the agency or university page it came from.

only reported one case in 2014

Hantavirus cases reported since 1995

Hantavirus became nationally notifiable in 1995; Connecticut risk is low but white-footed and deer mice are present.

Connecticut Department of Public Health

100-175 feet

Rat range from nesting area

DEEP's model plan; rats range farther if food is limited.

Connecticut Department of Energy and Environmental Protection, Pesticide Management Program

10-35 feet

House mouse range from nest

Mice nest in walls, ceiling voids, cabinets and appliances close to food and do not need daily water.

Connecticut Department of Energy and Environmental Protection, Pesticide Management Program

Rodent species recorded in Connecticut

House mouse (Mus musculus) — Enters at 1/4 inch; 5-10 litters per year; eats about 200 small meals a night.
Norway rat (Rattus norvegicus) — Burrowing rat of basements, sewers and ground floors; tail shorter than head plus body.
Roof rat (Rattus rattus) — Climber of attics and trees in warm and coastal regions; tail longer than head plus body.
Deer mouse (Peromyscus maniculatus) — Primary U.S. hantavirus carrier; lives throughout Washington and the interior West.

When rodents are busiest in Connecticut

Mice often invade homes or sheds in the fall.

DEEP's rodent certificate and model IPM plan name the Norway rat, roof rat, house mouse, deer mouse and white-footed mouse as the commensal rodents controlled in Connecticut.

Rules that apply in Connecticut

For context, nationally

1/4 inch (the width of a pencil) — Smallest gap a mouse can enter. CDC
890; 35% fatal; 94% west of the Mississippi — Hantavirus cases reported since 1993 (through 2023). CDC

Sources: Connecticut Department of Public Health; Connecticut Department of Energy and Environmental Protection, Pesticide Management Program; CDC; Pest Notes: House Mouse; Pest Notes: Rats; Hantavirus. Figures are quoted as the source prints them. How we check our sources

Explore Connecticut cities

Bristol

Humid Continental · suburban setting

Rodent control in Connecticut

Rodents in Connecticut: what to know

Around Connecticut

What to note

A useful next step

Rodents in Connecticut: what the public record shows

Rodent species recorded in Connecticut

When rodents are busiest in Connecticut

Rules that apply in Connecticut

For context, nationally

Explore Connecticut cities

Bristol

Danbury

Greenwich

Hartford

Meriden

Middletown

Milford

New Britain

New Haven

Norwalk

Norwich

Shelton

Stamford

Waterbury

West Haven

Westport

Glastonbury

Ask about rodent control in Connecticut