Dave- Hi. This is a common chore in springtime, dealing with the dead colonies. Really, it is simple. Remove each comb. Shake the dead bees off, and then if you want to be really good gently brush the remaining bees off the surface with a soft brush (old paintbrush, feather or whatever. DO NOT worry about the bees "in" the cells. You won't get them out without damaging the comb. Scrape off the dysentery and burr comb/propolis buildup on the frames themselves, for the most part, anyway. ALSO scrape down the bottom-board/floor very well so it can dry out. It would be good to set it in the sun for a day or two, if you can. Other than that, you can scrape down the rabbets in the box, where the frame lugs sit, as they probably are laden with propolis buildup. If you have done this, the new bees have a great head-start. They will very quickly remove the remaining dead bees, mold, etc, and fix up the combs, and soon you will have NO evidence of the dead colony at all. They really are great at re-furbishing a hive like that. Have a good season... Best wishes, Joel Govostes, Freeville, NY (nr. Ithaca)