Varroa ... Knock em dead.
I have used Apiguard several times in the past and it has proved effective and convenient.
It is easy to put on to the hives and does not entail waiting for the bees to cluster or having to remove the supers while treating the colonies.
The fall of varroa can be easily monitored using a screened floor and catcher board. A follow up treatment is carried out as per the clear instructions and it takes care of the vast majority of mites before winter.
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