Howdy!
I wash the fabric. Dan-the-bug-man shows up here every 3 months and uses a "green" chemical for scaring off bugs; the stash fabric stays clean and bug-free. After working at the LQS 6 days a week it was amazing the filth that new fabric left on my hands. I don't miss that part. ;-)
And Dan keeps telling me about fabric sellers who are his clients, and people who have quilt tops that need to be Finished, and tells others about my quilts and yahoo site pics. I like Dan.
Ragmop/Sandy--washes the bb swap fabric, too, in a pillowcase