Re: Screened Inner Cover/Dead Bees
Need to screen off all openings to top of inner cover, so your bees and robbers can't get in.
Am trying some mini supers(3 1/2 inch) high above my inner covers. Have drilled two one inch holes on each side. holes slanted slightly downwards, and covered in 1/8 inch screen. Have screened bottom boards, and big screened opeinings in my inner cover( 3.5 inch in center and two 1 3/8 in corners) to provide as much natural ventialtion as the bees will allow. My five deep super is bearding some on 90F days.
We don't have mush trouble with unwanted bugs in our area but a screened cavity in your area may be a problem.
Zone 3b. If you always do what you always did, you'll always get what you always got!