A general approach for removing bees from inside:
 
                - darken all but one access. The bee will fly toward
        the light.
 
                - for this access have a the ability to have a double
        screen. The bees fly to the screen. Place second screen over
        the window. Go out side and remove the first screen.
        Replace screen less the bees. Go back inside and remove second screen.
        Repeat as required.
 
        The purpose of the two screens is to keep the robbers waiting
outside for entering an you let the others leave.
 
        This would work vey well with Anderson type windows with the
inside screen. Just let the bee pile up on the window. Install the screen.
Crank the handle to open the window and pesto.
 
        I've never done this, but I did read a article on the web somewhere
that was in effect this method.