last year i culled some brood frames to cycle them out, a number of those frames contained honey, and/or honey residue. i fed the frames back to the bees in the fall. i used an uncapping plane to salvage the wax, and what i couldn't slice off with the plane, i sent through the solar wax melter.
what wax i salvaged from planing off, i washed using a paint strainer, a five gallon bucket and a garden hose. i usually wash wax cappings from a honey harvest this way (after being run through a cappings basket) and wash until the water runs clear; let dry, then run the wax through the solar melter.
after rinsing a number of times, the honey residue began to dissipate and i started getting a lime green color going in the water. this took forever to wash completely from the wax, and there was still a slight lime green color to the water that remained. i let soak in warmer water several times and rinsed again.
what was in the wax? i am certain the wax held some sort of residue, pesticide perhaps?
headlines like this speak for themselves and hype the public, but i do think there is something to be said about pesticide/insecticide/mite treatment and whatever else residue that remains in combs, and why it is important for us as beekeepers to cycle out our brood frames from time to time.