My sweet old grandma gave me a hive consisting of a bottom board, 2 deeps and 2 supers from my grandfather. It has been in the basement for 8-10 years. He host the colony for some reason and he scorched the inside of the box but never got another swarm.
I disposed the frames and there were several dozen groves in the deeps and I did find one cocoon over one of the droves. I assume wax moths. Is there any reason I don't reuse the boxes? I was planning on scorching them again and painting the outside. I don't have a digital camera with my to take a picture of the grooves.
Re-scorching might not be necessary but it's not a bad idea. I would also have 86'd the frames after that long of time. Repaint, get new frames, and install bees. Should be fine.