Tonight I saw a frame of brood comb from a hive to the inside of which the owner had applied copper napthenate(wood preservative). The hive sat empty for 12 months after the application. This comb was fully drawn and the bess had absconded. The wax was tinged in varying shades of pink. he reported that all frames in the hive were in similar condition, with the ones at the outside considerably more colored. We could deduct no other reason for the pink color other than the coppper napthenate. Has anyone had any experience with this stuff? I don't think he'll make the same mistake again....