First week of July I made up 20 splits with new Minn. Italian queens. Made the splits 3 days before intro of the queen cage. All queens were released within a week and now I am going back through them to check on the progress and am not having any success. I have check 10 so far and only have 1 that took. We had a stretch of 100 degree weather in the Mid-Atlantic mid month and I am wondering if that heat played a role in these failures? Anyone have any ideas?