"Say Cheese

First off, AIR is cheese’s worst enemy. When cheese is exposed to air, mold forms.

DOUBLE WRAP IT To keep cheese moist—but not mold-prone—first wrap it tightly in waxed or parchment paper and then loosely in aluminum foil.  Or, take the cheese wrapped in waxed or parchment paper and store with other wrapped cheeses in an airtight container!
And, PLEASE….even tho buying in “bulk” at Costco seems like such a deal…when you bring it home, cut it in half and freeze one half and then use the other.