Bummer Cher – it’s bad enough when you know what got the eggs (like mine by house wren last month), but to not know for sure is really frustrating. Sounds like you have it all covered, though. I have greased my pole right underneath the box when I had ant problems – took care of them for sure. Right now it is the heat I’m worried about, but mama is hanging there on these almost 100 degree days!
