In a 10 frame hive a propolis trap can be placed above the frames so the bees can fill it with propolis. Now in a TBH the bees can not get above the top bars because there is no space for them to do so? So, what is the best way to gather propolis with a TBH?
Reason asking is because I will be getting a package of Caucasians and building a top bar hive for them. I was going to try to gather propolis from these bees not honey.