Hey, Ed. I'm not in the area you were referring to, but I've noticed in the last month or so that SHB numbers are low for me, too. Early in the spring I thought they were going to tote my hives off, but they seem to have disappeared. Thank goodness. I don't have any explanation for this , I didn't do anything except mash them when I saw them.
mamapoppybee - I have been wondering the same thing. I've never used boric acid, but I was thinking about it this spring. I went as far as to buy some, but I didn't use it. I'm very hesitant to put it in my hives, but I'd try it before I lost a hive to those little rascals.