They like grubs & worms.........if you treat it for grubs they will go someplace else. They also do not like caster oil. Secure all trash cans in an area that is locked down as they can open cans and also unlocked doors. Any fruit that is dropping would have to be raked up and taken away. Take away the food if you are feeding pets outside................and treat ground for grubs. Racoons like to go up on roofs and like to try to make a nest in chimneys. Possums only come out at night time and they do not like lights. They also will eat anything Neither likes ammonia dipped rags. Fruit tree dropping will draw them. . If you have an opening under your porch...or shed........when they come out at night time put ammonia rags under their and check with a flashlight and close that off so they can't get back inside. Just make sure no babies are left behind. Possums carry their babies in a pouch. Raccoons do the digging. Possums usually go up in trees