Cleansing The Crimson or Corruption

[PeanutsAreGreat]

Hey can anyone give me an easy way to use the clentaminator or something efficiently? It's quite hard to dig sections inside of my Crimson, or make a border around it. And even if i block it from spreading WHILE making sections, it makes the world look really bad.

If there's no other easy way, then that's ok.

I could use the disable spreading mod but this is for a vanilla playthrough.