What is the best way of clearing out these things and taking more space? I've got artillery guns keeping them a distance away from my walls and I recently built a spidertron. I can make an artillery wagon but I don't know how it works tbh. Also I don't know how it would defend itself from the counter attacking swarms. Those counter attacks are brutal, it takes 2 lines of laser turrets to hold them off, and 5 tile thick wall. Initially I had 1 line of lasers with the 5 tile wall and they smashed through that

