TRhey look to be an interesting bee.
It is favored among beekeepers for several reasons, not the least being its ability to defend itself successfully against insect pests while at the same time being extremely gentle in its behavior toward beekeepers.
These bees are particularly adept at adjusting worker population to nectar availability. It relies on these rapid adjustments of population levels to rapidly expand worker bee populations after nectar becomes available
in the spring, and, again, to rapidly cut off brood production when nectar ceases to be available in quantity. It meets periods of high nectar with high worker populations and consequently stores
large quantities of honey and pollen during those periods. They are resistant to some diseases and parasites that can debilitate hives of other subspecies.
I also see they are gentle and non aggressive.
As a bee keeper I never use chemicals and I doubt any do.
But not using smoke is new to me, it may work.
Good luck with them.