With 15 years of keeping bees under his belt I would hope that the OP has learned something and may have some interesting comments about how he manages to keep his bees ..So, it's in the treatment free section of the forum, although he does not say that he keeps his bees without treatment. Looking at the location County Clare is about as far West as you can get in Ireland and I suspect that it may be a very rural location where he keeps his bees..
So, let's give him some space and see what else he has to say before the usual suspects start to tear him limb from limb. There's room on here for all sorts of beekeeping ..
Philip