By placing an open screened bottom board, a.k.a. an open mesh floor and a screened top (a window screen splined into a standard window screen frame available at any home store) in place of the usual inner cover, with the outer cover propped up the ventilation will bring them in quickly. I experienced the same thing when I ran out of sbb's and had to use a standard floor for a short time this summer. When I switched the solid floor out for a sbb, in they went. In the Pacific Northwest we have experienced the same temperatures as you have for most of July. Additionally, you won't need a front screen to close them in, simply nail a piece of wood across the front, the bees will have plenty of ventilation as long as you keep them on a pallet or other boards to keep them directly off the ground or trailer deck. Replacing your inner cover for a mesh screen will greatly add ventilation and allow the bees to dry out the nectar a lot faster, increasing honey yields. Common sense really, try to evaporate 10-20 gallons of water in a small room with only a few small openings and you'll see how important it is to maximize ventilation. :::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::: -- Visit www.honeybeeworld.com/BEE-L for rules, FAQ and other info --- ::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::::