I need help with spawn

I need help with spawn
I’m adding a zone of volume, and also a zone of spawn, the problem is that the NPCs begin to be born without stopping, they are born infinitely, the map ends up getting full … it happens mainly with asings of bees. How to solve this?

I have had this issue before. After trying many things, I just ended up deleting it and recreating it, and it worked fine. Dunno why, but No matter what resizing i did i couldn’t get it to stop spawning infinity.
Oh, After I remade the new zone, I only used the little scale thing on the actual view window, I read somewhere using the section to actually change the numbers by inputting actual numbers causes issues.