Acid zombies are kinda meh and not too much of a threat.
Spitters… oh well, one on one they aren’t too much of a problem either. I usually try to bait them alone when they are in a small group.
Corrosive zombies on the other hand seem pretty rare for me. Don’t think I’ve ever met more than 1 or 2 on any give savefile.
But then, most of my survivors die pretty quickly.
And I didn’t know that smashing their corpses caused acid to splatter around. Good thing I always butcher. 