Prevention is one way to keep wildlife from inhabiting the home. Animals once hey find a way in remembering it, and they will keep returning. They also mark their territory which lets other animals know that there is new home. Once they enter your home, it becomes their home. They bring with them possible diseases or health hazards.
If animals have invaded your territory before you could prevent it, there are humane ways to get rid of them. Wildlife removal is not something that you should do yourself as you can cause harm to yourself as well as to the animal. So if you find you have been infested with squirrels, raccoons or opossums then you need to call a specialist.
Wild animals can cause a lot of harm from chewed wires to damaged insulation including holes in heating and cooling vents. They can quickly cause damage, damage that can run into a lot of money.
To resolve wildlife conflicts between humans and animals, you have to appreciate wildlife and their environment. A lot of these conflicts are from irrational fears. We are afraid of snakes, yet they are beneficial to the environment. They are rarely a danger to humans. There is time when we can leave nature to take care of the problem, but sometimes we have to call a specialist to keep our property from further damage
You want a specialist that practices humane wildlife management. They will use non-lethal animal removal. No-Trap animal control or wildlife release on-site methods for removal of the pests.
It is also a good idea to familiarize yourself about the animals that are in your neighborhood. You might find that what you had considered a threat is not a threat at all.