> Does anyone know of tests under inexpensive material such as > polythene, or trials against larvae, eggs and pupae? I visited a Californian queen breeder about 15 years ago who had obtained a beat up old transport/shipping container. As I remember, he planned to fill it with his baby nuc equipment which was vulnerable to moth damage. He was then going to cobble together some sort of smouldering-device to produce CO2 and monoxide, figuring either/both should do the trick, and duct it into the container. He figured that he might not get so high a concentration, but could readily afford to increase time. I have no idea of the outcome(s)!