On the Clackamas County website you can find a “Plan Review Guidance For Restaurants” page. Here is what the County says about rodents:
Doors and Windows: Restroom doors must be self-closing. Exterior doors shall be rodent proof (clearance should not exceed 1⁄4 inch and should be as tight fitting as possible). All openings to the outer air area to be screened to prevent fly access (includes ventilation ports) unless an integrated pest control plan is approved and followed.
Additional information about restaurants and preventing rodents can be found on the CDC website: Click here
If you need any kind of help on mice, rats, or other rodents in Portland or other areas we serve then you are welcome to contact us here: