wash finished quilts in dawn dish soap. it's similar to Synthrapol, a detergent dyers use to keep fugitive dyes from redepositing on fabric. use a tablespoon or two per quilt so it doesn't foam up the machine. wash new fabric with it (in HOT water.
Everyone Deserves a Quilt: Tip Tuesday! - A Spray Starch Alternative This is "Quilters Moonshine" it is 1 gallon distilled water, to cup liquid starch, 1 cup cheap vodka. you can add essential oil for a scent. Also you can make a smaller batch.