Does anyone have any experience with these? I am planning on expanding my beekeeping next season and I access to cheap drums used for water soluble laundry soap. I'm wondering of they do well, as I can get 2 hives out of each $10 barrel. The ones i can get are the opaque white ones, so I am imagining I will paint them to make the interiors darker. Just wondering if someone can provide me with some insights.