War with the SHB and my girls have been relentless!! And it will continue. However I'm doing all I can and as with a bunch of females they all like to be neat and clean and want to constantly improve their living abodes.
So, every fall I usually change out brood bodies, bottom boards and inner covers with fresh cleaned new ones. Gives me a great chance to clean,repair, and inspect my honey and brood boxes, tops,and inner covers.
I have decided to further fight and help the girls as much as I can and decided to go back with a latex caulk and smooth any crack, crevice,hole,wrinkle,etc that is a little large for propolis and for the females to handle. Main place is in the inside corners of the hive bodies. Lots of propolis is usually there but a smooth small rounded bead of caulk will help with the hiding places for the SHB to go too. They like the corners and I've seen them and tried to mash as many as I can when I see them. Someone really needs to develop a small bee size stealth "drone" to laser blast them. But until then they get mashed by me.
Probably really don't matter to the ladies but it sure has made me feel better to help in their war!!