Thank you for making this mod! It's very useful. I was able to use it with no issues.
I'm a noob on my first playthrough, and I let biter evolution get ahead of me to the point where they were easily breaching all my defenses (double-walls, dragon teeth, entire banks of a dozen turrets side-by-side). I thought I was gonna have to abandon all my hours of work and start over, but this mod saved the day!
Upon reloading the game, all the biters that had breached defenses had disappeared. Some corpses were still visible for a moment. All the nests on the main map were gone. The only thing left was all the scars on my base - the damaged walls and destroyed turrets.