On Porter bee escapes: I have been told that they work well when the nights are cool, as the bees leave the super to cluster in the cold, and then can't get back. Unfortunately, near Washington DC we take off our supers during the hot summer months. Since the bees won't leave the supers at night, the Porter bee escapes won't work here. Personally, I use a fume board with Benzaldehyde (synthetic oil of almonds) with excellent results. The stuff smells like almonds, unlike the "gags buzzards" smell of Bee Go. W. G. Miller Gaithersburg, MD