Raid has a spray for bees, we have used it before for nests up north. Yes do it at night when they are sleeping, sneek up on them and they don't know what hit them. Honestly do it at night so you don't get stung, and if the light has power going to it you might want to think about shutting it off as you are spraying it with liquid. Better to be safe than sorry.
A man who looks into a collie's eye to receive an icy stare is but a fool. Be at one with man's best friend and through his eyes you will see his very soul.