With the cool nights becoming more frequent, if you have not already replaced your screen inner covers with conventional inner covers, you should do so.
It will help the colony keep the temperature regulated and expend less energy to do so.
Update of old post: If you use screen inner covers with #8 hardware mesh, you need to fortify it against Small Hive Beetles (SHB) by putting a layer of metal window screen above or below the hardware mesh. The easiest approach is to cut metal window screen to the same footprint of the inner cover and staple it to the bottom of the inner cover. Small Hive Beetles cannot get through the metal window screen
It will help the colony keep the temperature regulated and expend less energy to do so.
Update of old post: If you use screen inner covers with #8 hardware mesh, you need to fortify it against Small Hive Beetles (SHB) by putting a layer of metal window screen above or below the hardware mesh. The easiest approach is to cut metal window screen to the same footprint of the inner cover and staple it to the bottom of the inner cover. Small Hive Beetles cannot get through the metal window screen