"Finn is a friendly cat but will not come to you. He makes a loud crying noise for attention. He was last seen around noon on Sept 24th on Franklin Avene. If you see him, please call or text Suzanne at 703-888-6937."
Put up flyers everywhere asap. It will help a lot. Also people put their dirty laundry outside for the scent of home. Be sure to tell people to take a picture of the flyer so they’ll have your phone number
Put out his litter box,smelly food,pieces of your clothing.
Make a chum trail with used litter or wet food in a gallon of warm water.
Check consistently garages,sheds,basements,secluded spots,under porches and vehicles. One of mine ( indoor) hid 5 days in a neighbor's basement. Had looked there several times.
Go out at night with a flashlight and call him. Go repeatedly,especially late at night.
Get a humane trap.
Alert shelters,rescue groups,groups that feed feral colonies,vets.
Prayers he is soon home and safely INSIDE.