Thought about doing this for several years and did for a short time.When taking honey off a hive, put the hives number on the super and after extracting put it back on the hive it came off of (either wet or dry) My thinking is it would help keep disease from spreading from one hive to another?? I know Drones are guilty of spreading disease from one hive to another, but it couldn't hurt to try. After i got up to 90+ hives it was a hassle to do when you have several bee yards miles away, but still think it would help. Jack