Build a high-quality fence or a tall, thick wall. Concrete walls are high-security but can be costly. This method is not as practical as others because of the expense and because no method guarantees protection. However, walls are much harder for raccoons to get past than regular wooden or metal fences. Also, you can provide extra security for gardens by caging them, or fencing the sides and top of the garden.
Install motion-sensing water sprinklers, lights and alarms or scare noises. You do not want to annoy neighbors if you have people living close to you, and you also may be sensitive to the lights and sounds, so choose the option that best suits your situation.
Set up raccoon traps, which draw the raccoons' attention and then cage the raccoons until you can call a professional to remove them. These traps are special cages designed to just for raccoons and can be purchased online or in stores.
Minimize all temptation for raccoons to explore your home except for traps, should you choose to set them. This includes taking active measures, such as putting your trash in a garage or shed until the morning of trash collection day; removing bird feeders every night, as raccoons are nocturnal; keeping your pets, especially their food, inside your house; and covering your chimney.
Call a professional animal removal specialist if a raccoon does enter your house. This way, the animal will be removed safely and humanely, and you will be protected from contracting diseases or injury.