If you have discovered raccoons living underneath your house, they are probably there to seek shelter or care for their babies. Unless they are paying you rent, you probably want to get rid of them. The best ways to remove these critters from your home are humane (such as raccoon repellent), and will result in no harm coming to you or the animals.
Raccoon Repellent Options
Use a repellent, a raccoon trap, or ultrasonic device to get them away from your home and family. If you are unable or unwilling to trap and remove the raccoons yourself, call a removal specialist who can take care of the animals without harming or killing them.
Try using a repellent such as predator urine to get the raccoons out from under your house. Spraying or sprinkling any of the products on the market such as coyote urine should be helpful. The scent of their natural predators might discourage raccoons from returning to your house. This method does not cost a lot, and it is a good starting point.
You might also want to use something like an ultrasonic device. These small machines can be left on your porch, driveway, or in small spaces near the base of your house where raccoons may be burrowing. The machine transmits a highly pitched sound that you will not hear, but the raccoon will. Raccoons will find it disruptive and annoying, and they will stay away.
Set a trap for the raccoons, especially if you have a family of them. Metal cages are available that capture the raccoons without harming them. You will need to lure them into the cage with a little food. Once they are trapped, drive them out into the woods or the wilderness, far from your house. Raccoons are smart animals and will probably find somewhere else to live once they are relocated from your property. The best way to make sure you safely remove raccoons is by calling in a professional. While it may cost a little bit more to have a raccoon removal specialist come into your home to trap and remove the animals, at least you know the job will be done properly.
Remove raccoons from under your house as soon as you notice them. If you wait too long, you will have an extended family living there, and there will be even more critters to remove. Invest in some raccoon repellent, an ultrasonic device, a cage, or a professional removal specialist, and free yourself from your houseguests.