For a food business, rodents are a closure risk. The County of San Diego Department of Environmental Health and Quality treats vermin as a major violation. Its guidance says that if inspectors find evidence of rodents, the facility will be ordered closed until corrective steps are taken and a follow-up inspection confirms compliance.
The county tells operators to contract with a pest control operator licensed by the State of California, and it recommends a monthly service contract. A restaurant program is built around that.
What a restaurant program includes
- Full inspection of the kitchen, dry storage, walk-ins, dish area, bar, dining room and back of house
- Exterior: back doors, grease and trash enclosures, roof and landscaping
- Sealing of gaps in walls, ceilings, shelving and around pipes, as the county guidance calls for
- Door sweeps and self-closing back doors
- Traps under and behind equipment and in storage areas
- Locked exterior stations where allowed
- Monthly service, with more visits when activity is found
- A written service report after each visit, kept on site
- Staff training on what to look for
If you find rodent evidence
The county's rodent guidance for food facilities lays out what to do:
- Stop food service right away if you see evidence of rodents
- Have your licensed pest control operator identify the rodent, find entry points and nests, treat the facility and document the work
- Clean up droppings, urine, nests, dead rodents and rub marks
- Throw out gnawed or possibly contaminated food and items that cannot be sanitized
- Wash and sanitize food-contact and non-food-contact surfaces
- Remove clutter and unused equipment, and seal gaps in walls, ceilings and shelving
- Do a self-inspection with a flashlight before asking for re-inspection
The county says repeat inspections bring additional re-inspection fees, so finish every step before calling. Inspectors will ask for your pest control receipts. See the restaurant rodent violations guide.
Why San Diego restaurants fight rodents
Many restaurants here have patios with palms and planters, open-air dining and back doors propped open for air in warm weather. The county's prevention list starts with keeping doors closed. Shared alleys in the Gaslamp, Little Italy, North Park and Pacific Beach put several food businesses next to the same trash and grease bins. Roof rats move along those alleys at night.
Deliveries bring risk too. The county tells operators to inspect deliveries and refuse anything with rodent damage.
Rodenticides around food
California has prohibited most uses of second-generation anticoagulant rodenticides since January 1, 2021, and of diphacinone since January 1, 2024, including around restaurants. AB 2552 added chlorophacinone and warfarin on January 1, 2025, and restaurants are not among the exempt sites in the state's enforcement letter. Expect your provider to rely on sealing, traps and approved exterior stations. Ask what will be used and where. See how to verify a pest control license for the full rules.
Daily habits that keep inspectors happy
The county's prevention list reads like a closing checklist. Inspect deliveries and refuse anything with rodent damage. Clean food residue, debris and standing water every night. Store food in rodent-resistant containers. Keep doors closed. Put food waste and rubbish in leak-proof, rodent-proof containers. Inspect the facility routinely, and train staff to report droppings or gnaw marks to a manager.
Talk to your pest control company after every visit and read their notes. If they flag a gap behind the dish machine or a torn screen on the roof, get it fixed before the next visit. Those notes are also what an inspector will want to see, so keep them in one binder or folder near the office.