They will not attack or lunge. They are relatively disease free. They do not carry Parvo virus, distemper or rabies. They are actually an excellent animal to have around your property because they eat rats, mice, snails, slugs and insects. They are quick to pick up and eat fruit that has fallen to the ground.
Opossums are nest builders.
They are also nocturnal. They spend much of the day in their dens. At night, they forage for food. Spray or soak rags with ammonia and spread them every six inches around the fence or the area that you are trying to keep the opossums from entering. Adult Opossum Put a box or laundry basket over opossum and weight down the box with a book, brick or whatever you have available.