" Quite simply, I would say: "I would like to get rid of that tick that is been biting me all day long." I wouldn't say: "I have to be free from that tick." And that's why I might use "rid of" with a chilly, rather than "free" (it doesn't https://ecograntscheme.family.blog/2025/07/20/solar-energy-grants-uk-government-support-for-greener-homes/