When sorting through dead outs and preparing equipment to be used for spring splits, how critical is it to remove old comb full of drone cells. When I prepare a box for a spring split I will reuse some drawn out comb along with some new frames. For years I have always got rid of any old frames that had too much drone comb. The thinking is that the new hive will produce extra drone brood causing the varroa mite population to grow more quickly. What are your thoughts on this?