Ok, as OJ might say,I will take a stab in the dark at it.
With NO prior knolage of whats going on, one semi educated prediction is that early BB testing has produced positive results, details probably won`t be shared. (thats just my best guess)
My friend w/ entomology experience says hard shelled bugs are more difficult to kill if I remember correctly. With that said,I think future BB results MIGHT yield the following: 95% BB kill rate after a 3 hour start to finish application. ALL strictly my best GUESS! Because that is what I hope for it probably will not happen... GLTA