MANY years ago when I 1st started quilting (before the days of too many laundromats), I read an article about washing quilts & have used this.
Using a mild soap, wash them in a bath tub, agitating them by GENTLY pushing them up & down. Drain & push water out (don't "wring"), repeat w/rinse water several times. Then lay on a sheet w/another sheet on top in the yard to dry.
Good thing there are laundromats now thou, as NO WAY could I get down on these 77 yr. old knees :cry: