+1. home remedy is lemon juice with a needle, narrow kitchen food injector. You have to hit it right in it's mouth before it closes up and this might take some practice. If you have kalk, a kalk pasts works.
I don't recommend scraping. You're more likely to leave bits that will regenerate and multiply.
given all the threads that mention how it keeps coming back, I suspect the ones you see and zap are not the only ones. Like mice. If you see one, there is usually a lot more you can't see that show up after you get the one you saw.
They don't bother me. I view zapping aiptasia part of the routine maintenance. usuaallt every three months or so.
Aiptaisia X is good, and I recommend it for the injection needles. You can save money after by switching to kalk past or lemon juice.
I've read posts that say boiling water injections work without killing its neighbors but I have never tried that remedy