Raccoons are typically scared off by loud noises, bright lights, and strong smells. To scare a raccoon away from your property, try banging pots and pans together or using an air horn. You can also use motion-activated sprinklers or floodlights to startle them with sudden movements and bright light. If you have access to it, ammonia is a great way to create an unpleasant smell that will drive the raccoon away. Finally, be sure to remove any potential food sources like pet food bowls or garbage cans or secure them (bungee cords are a good option) so they don't come back looking for more!