we have had she here for about a decade... as with many things bee... when something new comes into play the beekeeper will have to evolve with the new problem or go extinct....
there are a number of potential remedies that can be applied to the shb... one, find a location where the ground is as hard as rock or will grow no vegetation... some folks seem to think the shb will crawl a long way but not in my own observation.... two, place fewer frames (DO NOT CROWD) in those mating boxes and make certain that no side touches the outside or bottom (you may need to trim wax from the frames bottom bar) of the box. anywhere the bees cannot get too becomes a place for the shb to flourish.... three, swiffer duster pads (cut into smaller pieces) gives me good results in limiting adult shb population < you want to place these along the back edges of the top bars at the very back (darkest) place in the box... lastly, if you have anywhere around with rotting fruit (cantaloupe, squash or watermelons) you likely should think about finding another location < all of these things when they rot are a breeding ground for shb.