I would wash them in the washer on regular cycle with detergent and then place in dryer...then I would put it in a bag.....I would then gift it and tell the receiver of the quilt to open the bag, not shake out the quilt, and place it in her own washer and run through a regular wash cycle with detergent and then in the dryer. I would think this would work as the officials washing clothes in washer with detergant kills the virus