Thomas asks:
> But what do you do with the
dark ones or with pollen remnants?

Protecting dark comb from wax moth is tough but often depends on the weather 
and time of year.
In Missouri freezing weather solves the problem in late fall. Even dark comb 
can sit out in spring until the wax moths reach maturity.

We have about three months when unprotected comb can be ruined by moth 
damage.

Para dichlorobenzene is a poor choice for stored comb but the most used by 
hobby and sideline beekeepers. I have seen much abuse and overkill when 
using the product.

Common sense is to only use enough to kill moths and eggs when supers are 
placed in storage and then keep the stack (or area ) sealed.

The best product in my opinion was "death house" cyanide gas. I first saw 
its use at a USDA-ARS research facility many many years ago. The product was 
sold by bee supply houses for years.

Most large beekeepers today use Phostoxin gas (approved for comb storage) . 
A dangerous gas (like cyanide) . Both are temporary and pull all the oxygen 
out of the air killing all living things in the boxes. Like recluse spiders 
, roaches etc. brought in with the boxes.

In Florida I have seen supers kept in a cold environment ( 50F. & lower) but 
phostoxin gas is by far the  choice.
Expose can lead to a serious blood disorder (lack of white corpuscles) I 
have been told. In Nebraska a company will come to the bee farm and apply 
the gas.

In California a PVC tube is placed in a 40 foot storage container the the 
gas is applied through the hole in the roof when the container is full.

These are a few of the methods used.

bob 

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