I read some research a while ago regarding using OA sublimation when brood was present.
The findings of the research were that while brood was present the efficacy of the 3 treatments 5 days apart was around 70%.
This may seem low but it makes it roughly on par with the efficacy of Apiguard...
The book went up in price when it became a go to book for BIBBA members.
I'm sure I had a copy but cannot find it, I have the apimondia queen rearing book.
Not sure if I lent it to someone. Never mind.
Can't help sorry.
I prefer the nuc method or requeening so no swarm management is needed.
I would need a lorry full of stuff to use the pagden or demaree.
As long as you remove one of the triggers you'll be fine regardless of which version you like.
it's all about finding something that suits how you work.
Bees can tell time. They can allow for the movement of the sun during dances.
Bees are very attuned to the length of the daylight hours.
Remember they have to be 3 weeks ahead to generate a foraging force.
Don't try and work it out in human terms we don't think the same just work with it.
The issue with varroa resistant bees is they swarm a lot and make little honey. Tom seeley.
Problems with bee breeding are if you focus on one point then other points fail. Lasi.
The lasi bees are the perfect example, allegedly varroa tolerant but ended up with EFB after making a lot of money...