Hi Bob
I have not try Russian bees But I went with 50 screen bottom boards
My bees are carniolans & Italian I raise my my own queens And have across of
Italians &conns I have not use no Chemical or menthal for one year to see if
they would live with out Tretments lost one this year will not tret this year
to see how they make out
George Richtmeyer
George's apiary