I have a question, that I'm sure I could find if I keep reading back through the BB. I live in North Georgia 30 miles East of Atlanta. I want to know if the use of screened bottom boards are a seasonal tool (spring, summer) or a year around item. The winter temps. here average 40's high and 30's low, with a few weeks each year that the temp. drops into the 20's or teens. Thanks for any info. on this!