" Quite simply, I would say: "I would like to get rid of that tick which is been biting me all day." I wouldn't say: "I have to be free from that tick." And that is why I'd use "rid of" with a chilly, as an alternative to "free" (it https://ecograntscheme.home.blog/2024/09/13/4-steps-to-apply-for-government-grant-for-solar-panels/