White-Footed Mouse (Peromyscus leucopus)

Major Carrier of Lyme-Infected Ticks in Connecticut

White-Footed Mouse – Connecticut Identification & Tick Risk Guide:

The white-footed mouse looks nearly identical to the deer mouse, but it plays a significant role in Lyme disease ecology. This species is the primary host for deer ticks that carry Borrelia burgdorferi—the bacteria that causes Lyme disease.

Identification:

• Brown back, white belly
• Bright white feet
• Big dark eyes
• Two-toned tail

Frequently confused with deer mice.

Behavior & Habitat:

Thrives in:

• Wooded areas
• Stone walls
• Basements
• Attics
• Sheds
• Utility rooms

Often enters homes during cool nights, especially in September and October.

Why They Matter in Connecticut:

Connecticut has one of the highest Lyme disease rates in the U.S.
The white-footed mouse is the most important animal in the Lyme cycle.

Ticks feed on mice more than deer.

Signs of Activity:

• Nocturnal scratching
• Droppings in storage bins
• Chewed insulation
• Presence of ticks indoors

Health Risks:

• Lyme-associated ticks
• Urine/dropping contamination
• Chewed belongings
• Fleas and mites

When to Call a Professional:

If ticks are appearing indoors or scratching noises occur near stone walls or wooded edges, immediate rodent control is recommended.

Rodent Control CT

• Tick Control
• Moisture Pests