Bob Harrison wrote:

>Wax contamination could cause many problems in the future. In my own
>operation I replaced around 50% of the comb this spring. I replaced 25-30%
>two years ago.
>The rest of the comb is less than five years old .
>
Darwinism is about adaption, variations. The bees adapt well, offering them
old comb, and working with contaminated wax, they move out.

I'm having close contact to one place here that's offering producing
foundation from
the beekeepers own wax. Been there, seen lots of different colors of wax and
contamination, smelling wax etc.

Rule of thumb:
Holding the comb against the light, you should see you hand behind it as
a shadow.
(citation from: Swiss Beekeeping Book, "Der Schweizerische Bienenvater")

Daniel,
Switzerland.

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