What does Circe warn Odysseus that the Sirens will do to his men?

Circe warns Odysseus that the Sirens will enchant his men with their beautiful singing, luring them to their doom. She explains that the Sirens' song will tempt the sailors to abandon their ship and swim toward the source of the music, ultimately leading them to be shipwrecked and devoured. To protect his crew, she advises Odysseus to plug their ears with beeswax and to have himself tied to the mast of the ship so he can safely hear the Sirens without succumbing to their lure.