Whether it is Rat Control, Squirrel Control, a combination of trapping and exclusion will prevent rodents from damaging you property.
The most common problem that may allow a Squirrel, Opossum, Raccoon, or Rat access to a home owner’s attic is nearby trees with over-hanging branches close to, or touching, a roof.
Another common problem is old cable wires that go directly from a roof to another location above and off a property.
When considering Rodent Control, exclusion is a necessary part of any successful strategy. Trapping gets them now. Exclusion prevents animals in the future.