Hang flyers up immediately in upside down gallon size baggies to protect from the weather, in notify your mail carrier, Fed Ex and UPS drivers, and garbage men (they cover a lot of ground), notify your local vets, shelters and police departments and leave your ccontact number and a flyer, put his bedding and some of your dirty clothes outside for him to track the scent, check shelters daily bc the stray hold is usually only a few days, check window wells, check Craigslists (common place for selling dogs), post on Nextdoor app, post on PetFBI.org, and all neighborhood apps, ask businesses and neighbors to check their cameras/ring for possible sightings. 🙏
I cant express enough how important flyers are. Not everyone is on social media.