In Gulliver's travels What do the Houyhnhnm's decide to do with Gulliver at the Grand Assembly?

The Houyhnhnms, upon hearing Gulliver's account of humanity, decide that he is a Yahoo (a term they use to describe humans) and they consider him a dangerous, irrational being. They ultimately decide to exile Gulliver from their society in order to prevent him from corrupting their way of life.