In the Fall, about now in most NA regions, we are working at compressing the hives into the desired wintering configuration. This means manipulating combs to consolidate brood and resources to where we think they should be in the hive for best chances at making the coming winter. While doing so excess combs and boxes are removed. Often when done there are many bees left hanging out carpeting the front of the hive without enough space to get in. The bees left out is not a concern to us as most of those are about to die off of old age and high flight mileage anyways. The important bees, the young ones that will be raising the winter bees, are inside in the heart of the nest.
Of the removed equipment; What is worthwhile gets extracted. Some choicest combs are kept in storage (frozen) for use as emergency feed inserts in the spring. The rest; the stickies, the partial combs of nectar, scrapings, etc ... are open fed (rob) to have the bees take back and pack into the smaller hive space they have been left with. (Do this in dearth of course so the bees rob it out quickly). In case of just a few hives, only a couple combs and scraps are put out at a time. In yards with many hives, supers of stickies and partials are cross stacked nearby. Those are licked clean and dry in a matter of a few hours on a warm day. Pickup the dry equipment in the evening, when all bees are gone back home, and put into winter storage. Put out the next set early the next morning. Only put out at a time what they can completely cleanup in one to two days, not all at once.
Hope that helps!