Stan Sandler commented on old pollen turning to cement.  I have
successfully reused the ones bees no longer used the previous year by
freezing them till the following spring, then putting them in a glass
bowl with 1/2" water and putting them into the microwave for a few
minutes.  When heated they absorb water and get manageable, and seem to
work as well as new patties.  Gert Walter
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