I have been out of BeeKeeping for 10 years and am wondering, what are propolis
collectors and what is a good design for one. I looked in my old library and
could find nothing on them. I assume that they are a device inserted into the
hive that the bees are inclined to fill with propolis?. How is the propolis
harvested, if it is indeed soluable in alcohol then it would be convenient if
it was a device small enough to submerge in a tub of alcohol otherwise it
would be a tedious job.