I have a bunch of used plastic frames/foundation that came with some boxes I recently purchased. Is there any way to effectively clean them up so they can be used again?
I wonder if deep-freezing them for 24-36 hours will make the propolis easier to remove. Since they're plastic, you can't put them in the oven to kill diseases, but freezing does kill some stuff, doesn't it? If you want to get rid of all the wax, too, then I think you can just scrape most of it off and then google for "solvent+dissolve+beeswax". Simply spraying it with a pressure hose might remove the visible stuff, but what about the diseases and stuff?