Genreally, the stragglers go in because they can smell that the bulk of the hive is inside. But, with no queen, I suspect the smell of the outside bees is probably the same as the smell of the inside bees. There is no difference. Of course, I am guessing about what the bees are scenting. But, I DO know that disoriented bees find the rest of the hive by scent. That much HAS been WELL established!