I've used the foaming bee killer, but I think it foams up at the surface and doesn't get into the nest wound up spraying carb cleaner and covering the hole with duct tape( they were going in an outlet on my back porch) needless to say I didn't light it and the carb cleaner evaporates pretty...
I put boiled linseed oil cut in 1/2 with turpintine on the handle and heads of all my axes and hatchets. nice find if you look around the eye you can probably see where the Smith welded the axe you may can see where the steel meets the iron at the bit also