Yea!!! Their building down. I just saw comb in the second box, looks like their here to stay. Lots of brood cells closed over in the top box so that looks good too. Will be fun to see how fast they progress. Need to start building a third box soon as I want to keep one empty above the screened bottom. The upper exit seems to be working as no bee's were fanning in this heat today, and all was quiet within the hive (noise wise). No sign of chalkboard since I switched over and they cleaned up the mess, nor have the hive beetles come back. I have a trap made if they do. I am using diatomaceous earth which I also use for vine boring beetles in my garden. If the bee's fill the second box and move to a third, I will try and gather some honey, otherwise I"ll wait till spring when I switch around the boxes to split the hive. This is an exciting day.