Re: OAV and Splits
better yet don't leave any capped brood with the old queen and you can TX right away and get it done with a single TX
For the "queenless" split portion I would wait until the new queen is laying and treat just once before the first brood is capped.
For the portion with the legacy queen. Start anytime, treat 4 times 5 days apart.
the other split matters how you queen it... If you put in a laying queen you won't have much of a break to hit the mites, if you do cells you hit it with OA at day 19-20 while it is brood less .
edit I do mine simular to HB, but I just move one frame of open brood and don't shake any bees, the feild force is enuf and they "grab a gear" as Lauri says and become comb drawing machines
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