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Rodent Identification

Side black silhouettes of four animals. An opossum, a mouse, a rat, and a squirrel

There are many different kinds of rodents in San Mateo County but the most common nuisance rodents are house mice, roof rats, and Norway rats.

If you live near open space, agriculture, or a park that has a lot of native habitat, you may also encounter native mice, wood rats (also called pack rats), voles, ground squirrels, tree squirrels, or chipmunks.

The District provides rodent inspections to help residents reduce rodent issues in and around their houses.  If you would like a rodent inspection, please fill out a service request.

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