Originally posted by zargon.224:

I BEEN SEEING GREYLINGS. AND THERE WAS GREYDWARF ON THE INSIDE OF MY HOUSE NOT SURE HOW HE GOT IN.

Does your base have complete workbench coverage, such there is not a single inch inside your moat or walls that says No Workbench? 99% of the time, that takes care of it. Occasionally glitches still happen, but it's far more likely that you missed a spot. (Although you can replace the workbench with something else on the no spawn list after you have made sure you have full coverage.)

Another way to keep greydwarves and greylings out of your way is to dig a hole and shove them in it. They don't respawn if they don't die. (As long as it's a day spawn, not a night spawn.) I have a couple pet greylings that live in my moat. I've gone down there and used them to level up my block skill.