I never seen those polystyrene bee hives before, but I can certainly understand the need for insuation in cold climates. I am sure they've been tested for styrene leaching out of the polystyrene, but still I have questions -- maybe not scientifically based. I know they're is a lot of concern on some quarters about styrene leaching into food, especially oily food. Plus how durable are they? Maybe I'm just old fashioned, luddite.