" Quite simply, I'd say: "I would like to eliminate that tick which is been biting me all day." I wouldn't say: "I must be free from that tick." And that's why I might use "rid of" with a cold, as opposed to "free" (regardless of whether or not of https://ecograntscheme.health.blog/2024/09/13/4-steps-to-apply-for-government-grant-for-solar-panels/