" To Paraphrase, I'd personally say: "I would like to remove that tick that's been biting me all day long." I would not say: "I must be free from that tick." And that is why I might use "rid of" with a chilly, instead of "free" (it does not matter https://www.diigo.com/item/note/a6qh6/krdg?k=65e95b0913fab30cafc1f332b922353a