Where do I hire a qualified box truck driver willing to do hard work?

I run a growing local food scrap hauling and composting business in Louisville, and we’re looking to hire a dependable part-time route driver for box truck and step van work. The job involves early mornings, local routes, heavy wheeled bins, liftgates, outdoor work in all weather, and a long drive down some windy country roads after backing in and out of loading docks downtown.

For those of you who have hired solid delivery or route drivers before, where have you had the best luck finding hardworking, reliable people who are comfortable with physical work and independent routes? Indeed? Amazon/FedEx drivers? Word of mouth? Looking for advice from folks who have actually found good people.