How does Odysseus disguise himself upon his arrival to Ithaca?

Upon his arrival in Ithaca, Odysseus disguises himself as a beggar to avoid detection by the suitors who have overrun his home. He is aided by the goddess Athena, who transforms his appearance, making him appear old and ragged. This disguise allows him to gather information and devise a plan to reclaim his home and family without revealing his true identity.