Rodents in San Francisco don't wait for cold weather; the mild climate lets them breed most of the year. Neighborhoods bordering Golden Gate Park, the Presidio, Glen Canyon and the waterfront see steady activity, as do dense blocks with restaurants and alleys. If you hear scurrying or find droppings, call (844) 725-1661. PestMinistry refers callers to independent licensed providers and does not trap or exclude rodents itself.
Rats and mice in the city
Norway rats burrow in basements, along building foundations, under sidewalks and in sewer lines, and travel to kitchens and garbage areas at night. Roof rats are expert climbers that follow utility lines, fences, vines and tree limbs to reach attics and upper floors. House mice need very little room and live in wall cavities, cabinets and behind appliances. All three are found around San Francisco, so a technician's first job is to figure out which you have, since each uses different routes.
What draws them to SF buildings
- Wood-frame construction with gaps at sill plates, where Victorians and Edwardians have settled over a century.
- Shared basements and garages in Mission and Haight multi-unit buildings.
- Overgrown ivy and dense hedges along walls in the Sunset, Richmond and Noe Valley.
- Restaurant corridors and street trash cans that supply constant food.
- Construction that opens burrows and sends displaced rodents into neighboring houses.
Warning signs
Scratching, squeaking or running sounds at night, grease smudges along walls, droppings that look like dark grains of rice or small capsules, gnawed wiring or food packaging, and pets obsessing over a corner all suggest rodents. In basements and crawl spaces, burrows along the foundation indicate Norway rats. Pellets and gnawed fruit in the attic point toward roof rats.
How professionals handle it
- Find every entry: inspect the roofline, vents, utility penetrations, garage, foundation and any shared walls.
- Trap and remove: use appropriately sized snap traps and tamper-resistant stations. Many providers avoid loose poison indoors.
- Seal: repair holes with metal mesh, flashing and durable sealants that rodents cannot chew through.
- Clean and restore: remove droppings, sanitize and replace contaminated insulation if needed.
- Monitor: check back to make sure activity has ended.
In multi-unit buildings, a single apartment's repairs rarely solve the issue. Providers often recommend shared-space inspections and cooperation among neighbors or the landlord.
Keeping rodents out
Store garbage in rodent-resistant bins with tight lids. Avoid leaving pet food outside overnight, and clean up bird seed under feeders. Trim ivy and tree branches that touch buildings. Keep compost sealed, and fix leaking outdoor faucets that offer water. Seal gaps around pipes and cables with copper mesh or metal collars rather than foam. If your building has a garage or basement, ensure doors and vents close tightly.
Property managers in San Francisco often find that rodent calls spike after nearby construction or sewer work, when displaced animals look for new homes. A prompt inspection of the basement, garage and trash area can stop an issue before it travels upward. Residents of upper floors should not assume they are safe, because mice climb pipes and wiring easily and roof rats reach the attic from the outside.
San Francisco rodent FAQs
Is it safe to use rodent bait in an apartment?
Bait can poison pets, children and wildlife and may cause odor if animals die in walls. Ask providers about alternatives.
Can rats get into high-rise buildings?
Yes, through plumbing, garage connections and utility chases. Mice are more common on upper floors.
Do rodents carry diseases?
They can spread bacteria through droppings and urine. Wear gloves and avoid stirring dust when cleaning.
Who is responsible in rentals?
That depends on your lease and local rules. Report conditions promptly in writing.