Did anybody watch the presentation?
I watched it and spoke to the thermomite guy afterwards. I think it looks promising. Cost was quoted as being between £200 - £300 in the presentation, but when I spoke to him at the stand he reckoned £235 and gave me a sticker that would get me 15% off at launch. Given that a box of FormicPro now costs nearly£40 for a 5 hive treatment, I think the price is reasonable. For that, you get the wooden tray that goes under the brood box, 6 'thermo' pouches (you need 4 for a national), a cover board with reflective thermal lining and a hive cover to help hold the heat in. The pads are recharged by heating in boiling water and can be re-used (if you have ever had one of the handwarmers where you have a pouch of liquid and you click a bit of metal and it changes to a solid, giving off heat, you know how this works). The chap also said they will sell all the parts separately - I think the pouches were £30 each, so if you have nationals and bought the standard 6 pouch set and a couple of extra pouches you could easily knock up an extra tray and cover and have a second set very cheaply. (or split the cost with a mate) I thought he would be a bit antsy about this idea, but he actually said that is what they expected some people to do.
Given MAQS is not available (the guy on the NOD stand said they'd been told there wouldn't be any this year) this is the only treatment you could (legally) use at any time of year with supers on.
My only worry is the damage to brood by temperature. In the talk, they showed the temperature graph in the brood box during treatment and it didn't go above 42C - fatal for varroa and tolerable to bees for the 3 hours it takes. Varroa in sealed cells are killed, a major bonus. The owner/presenter came over as bright (it was a bit like watching a good pitch on dragon's den!), but a couple of things said made me think he isn't a beekeeper (or wasn't when he started this journey
I thought it was interesting that the temperature rise was very slow in the box (the pads warm up to 55C). They reckon for the first hour the bees do their best to keep the temp at 35C, so the increase is very slow so there isn't a sudden shock of going from 35C to 42C.
Overall, I think I might give this a go (or persuade my association to buy one) as I'm keen to support entrepreneurs like this. There aren't many and lets be honest, there doesn't seem to be that much innovation in bee kit, presumably because it is seen as niche.