" Basically, I'd personally say: "I need to remove that tick which is been biting me all day long." I wouldn't say: "I must be free from that tick." And that is why I would use "rid of" with a cold, rather then "free" (it doesn't matter no matter whether https://homeinsulationgrant.politics.blog/2024/09/13/what-you-must-know-before-applying-for-eco-grants/