I'm just starting up here in Alaska and was asked by the guy I bought some bee's with about why I am using screened bottom boards? when all he's seen up in AK have been solid bottom boards. I have used screened and solid bottom boards in Missouri for a few years and prefer the screened even in winter. The overnight temps up here are around 30F and daytime temps soaring up to around 55F. I havent been to a club meeting(next Monday) so thought I'd ask around the shop here? Any Alaska or Great North beeks have any input on this?