Re John Lewis's query on hive construction. I use masonite under my lids which are then in turn covered by a metal cover. Those famous Aussie migratory lids. No problems. Re your treated timber, I would try to find out what it was treated with first. The CCA treatments contain arsenic which will probably leach the arsenic although it is in a fairly insoluble form. The treatment could be PCP (pentachlorophenol) which is not good to have in bee boxes. It may only be something like methyl bromide which was used as a borer treatment. As I say, find out what it is and advice can be given from there. There are many timbers which occur naturally in Fiji which wuld be good for hive construction. There is a kauri pine (Agathis sp.) which would be very good from a weight point of view and workability but it is not naturally durable. You could treat it with copper naphthenate to preserve it. Hope this helps. Trevor Weatherhead AUSTRALIA