Perhaps a short trip in the micro-wave would kill any living organisms.
I've never done that since I own a laboratory oven that I use for
"conditioning" certain rolls.

It might be worth a try on one roll first to see if it works
satisfactorily.  (Don't use a test cat!)

Hal Davis

 [ The test cat is reserved for cat scans.  It's one of the new breed
 [ of scanners.  Available in nickelodeon pseudo-color or electrified
 [ monotone, and also for neutered reproducers.  Plays with Calico XXY
 [ instrument, if one can be found. ...   ;)   -- Robbie

 [ I'd like to discourage this experiment.  Microwave ovens are
 [ generally unhappy without an electrical load (the food).  Its bad
 [ for the magnetron (the tube that generates the microwaves.  Further,
 [ the energy distribution in the oven cavity is very uneven.  This
 [ is why a turntable is a popular addition to many modern microwave
 [ ovens.  I wouldn't be surprised if the peak energy levels in the
 [ cavity without a real load were so outrageous that if the roll
 [ actually was heated at all, parts of it would still be cold and parts
 [ of it would catch fire.    -- Jody