I use a solar wax melter and pile up my scrapings up on burlap. The burlap does a fine job of filtering the wax, and gives me sheet of burlap that has all of the right scents to put into swarm traps. I put the sheets on top of the frames in swarm traps.
Last year I made a few sheets that had about a 1/2 inch thick of slum gum on top of the burlap. It was really too thick to use in swarm traps, so it just sat around. I anticipated that the they would just get harder over time. But I was surprised that they were separating. There was a black thick oil coming out of the cake. It stains like ink, and is as thick as honey. I scrapped it off the burlap and put it in a jar with isopropyl alcohol and it made a black liquid quick as you can blink.
First, has anyone else seen this from an old pile of slum gum?
Second, is this oil of any use in conditioning a swarm trap? Has anyone used it before? It's a great wood stain.