Newbie alert! Squirrel problem

[Kanwar Sodhi]

Hey guys, first time having a squirrel problem. The tenant says there must be a squirrel in the attic because they had one before, found the hole and fixed it but this time they can’t locate it. Any recommendations? Are there companies that specialize in issues like this? I live in Douglasville Georgia and I’m having a hard time figuring out who to call.