I tried out the Sublimox yesterday. I am really pleased with how easy it is, much easier than the Varrox and much quicker. Togged up with decent respirator and googles, I quickly abandoned the goggles to see what I was doing. I vaped three hives through a reduced entrance block further reduced with sponge. I lost minimal vapour and that was only on the one box with a Paynes floor which because the landing board is so wide I had to half tip the machine before being able to push the nozzle in. Drops this morning were what I expected.
BUT back to problem colonies. The real rogue one is holding its own and i have left it alone. Two colonies are dropping very few or no mites but three were, so ten days ago I vaped them. The last round after supers came off was perfectly OK and I was happy with them. This time more mites but the three rounds seem to have got them.
Speaking to a friend in USA, they are used to vaping their hives four times a year.