I got a 6in block of 4X4in wood with a square pattern of many
holes drilled 2+in deep and a chicken wire anti bird screen over the face
several inches out fromm a class project in a rural HS in SW VA two years
ago; put it on a 4 ft post, it was filled and plugged with mud by Mason
beed queen or queens. They hatched. I cleaned the holes last winter and
there were no repeats last year.
John F. Mesinger
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