We were successful in finding our cat by posting/handing out yellow flyers with his color photo and description using the free template from lostmykitty.com. We posted them in residential neighborhoods, vets, pet stores, and shopping centers near where he was lost. It took a month, but we received sightings (mostly in storm drains/pipes, which cats can use as subway tunnels, and bushes) and calls. We left odoriferous (fresh but smelly fish) food at consistent sighting locations and times. This kept him in the same area with repeat sightings. We finally were able to recover him while feeding him. Never give up! Don't stop believing!