Rodent control in the Bay Area is a year-round challenge. Our mild climate means rats and mice remain active in all seasons — and population pressure in urban and suburban neighborhoods has increased in recent years. Whether you’re dealing with Norway rats, roof rats, or house mice, effective control requires a systematic approach.
Know Your Rodent
Norway rats (Rattus norvegicus) are large, heavy-bodied rats that tend to burrow near foundations, under concrete slabs, and in crawlspaces. They are strong swimmers and often associated with sewer systems and garbage areas.
Roof rats (Rattus rattus) are slender, agile climbers. They nest in attics, trees, and elevated areas. In the Bay Area, they’re common in neighborhoods with mature trees, ivy, and dense landscaping.
House mice (Mus musculus) are small and highly adaptable. They can squeeze through gaps as small as a dime and establish nests in wall voids, under appliances, and in stored materials.
The Three Pillars of Rodent Control
1. Exclusion — Seal all entry points. This is the most important and longest-lasting step. Materials matter: steel wool and hardware cloth are chew-resistant; caulk alone is not sufficient for rodent exclusion.
2. Trapping and Population Reduction — Trapping is preferred over rodenticide bait in situations where non-target animals or children could be at risk. Strategic trap placement in active areas is critical to effectiveness.
3. Habitat Modification — Remove food sources, trim vegetation away from the structure, eliminate harborage areas like wood piles and debris near the foundation.
ATCO’s rodent control program covers all three pillars. We identify entry points, recommend exclusion repairs, apply targeted trapping, and help homeowners reduce the conditions that attract rodents. Contact us for an inspection.