When Odysseus says you forced yourselves upon this house. Fight your way out who is he referring to?

Odysseus is referring to the suitors who have invaded his home, Penelope's palace, during his absence. They have taken advantage of his absence to court his wife and consume his wealth. By saying "you forced yourselves upon this house," he highlights their disrespect and entitlement, and by telling them to "fight your way out," he challenges them to face the consequences of their actions.