I used, for the first time, a pollen trap from Mann Lake (the drawer pollen trap which fits between the brood chamber and super) for 3 days and when I removed it , it had quite a few dead bees in it. So I haven't used it since. Firstly I can't get the dead bees out without disassembling it (which is not so much of a problem ; I'll put it back together with screws so I can always get the dead bees out). Secondly, I can't yet clearly see if the dead bees are drones or worker bees. (I read ,after, that drones can't make it through the pollen trap). My question , is that normal, am I using it properly?