I've had great results with fabrics & a sewing machine tote bag I thought impossible. Soak over night with Borax, then washed with generous vinegar rise. We buy white vinegar by the big jugs at big box stores, use it often for cleaning. Inexpensive.
I thought the sewing machine tote bag would be ruined soaking it & putting thru the wash but I couldn't use like it was, so was very happy when it came out like new.