The hidden life of house mice: night activity and small gaps
Why not seeing a mouse does not establish its absence: activity signs and entry points worth inspecting.

House mice are mainly nocturnal but may appear during the day. Inspection should consider signs and access routes, not sightings alone.
Read the signs
Gnaw marks and tracks help locate activity. A daytime sighting alone does not establish population size.
Section sources: [1]
Inspect small openings
House mice can enter gaps around 6 mm wide. Inspect pipe penetrations and door edges; do not generalize this dimension to every rodent species.
Section sources: [1]
Make observations useful
Record where and when signs occur. Reduce food and shelter and repair entry routes before choosing a site-appropriate intervention.
Section sources: [1]
Traceable sources
- 1House Mouse — Identification and BiologyUniversity of California IPM · 2025-07Accessed: 4 November 2026
This AI-assisted brief synthesizes the linked sources. It is not original Shockboom research or evidence of product efficacy. A specialist reviewer is named only after an actual review.
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