I had crawling bees at this time, last year, before the advent of my using
Apistan.  I thing it's been suggested that tracheal mites are the problem,
here.  I didn't have varroa, but I had LOTS of bees on the ground.  I
treated with Apistan, this winter, and have had no bees on the ground.
 
Jane B.  [[log in to unmask]]