Overwintering Techniques > Refrigerator--Speyeria unfed First Instars > Step #4: Pour Water into the Bottom of Storage Container

Step #4--Pour a small amount of water into the bottom of the storage container.  Place lid on loosely to insure that the environment within the storage container is 100 percent humid.  This humidity will subtly enter and exit the pill bottles in such a fashion that larvae will neither mold nor dessicate; but remain healthy.  Tweak water levels as needed to maintain proper balance.