Bees chucking out brood?

[Curly green finger's]

Two years using OA strips and the bees are fine, Same at my friend's apiaries

You making your own a bit stronger?

 

[Swarm]

As your only treatment?
Are your counts low anyway? Maybe that's the difference

My only treatment, he does a Winter trickle.

 

[Swarm]

You making your own a bit stronger?

No.