I guess they are correctly named, but the bees can go back in too. I have some bees in the wall of my house right in the corner of my bedroom window. So I ordered some bee escapes, applied some duct tape to restrict the hole and then installed a bee escape. Everything seemed fine and then I noticed that those clever gals figured out how to go back in. I guess I should have just gone and bought some wire screen and made my own. If this doesn't do the job, I will. There are alot of bees outside not going back in. I was able to stack two barrels, one on top of the other, for a platform to set a nuc box on. It's just the right hieght.