Notify police and the postal carriers in the area where lost. Check with neighbors or businesses nearby that may have cameras. Put a sign in your yard. Fill out lost reports with both Lost Dogs/Cats Illinois website (they have both) and Pawboost website. They will generate a flyer for you to print. Post in lost animal sites and community sites on FB. Put up flyers at nearby stores/gas stations and give some to pizza delivery places to put on their boxes. Let the kids in the area know as they notice everything when not on their phones. Put food and water out and something with your scent. Check in nearby garages, sheds, window wells, ponds, look under decks. Also check with shelters in person or call as many as you can and give them a flyer. If the animal is chipped notify the company and make sure your contact info is correct. Also let vet and groomers in the area know.