I found this site while trying to find some help removing Clover yellow chaco lines from white quilt fabric. I had marked the centre of the block prior to embroidering a design. I sampled the yellow marks on other fabric and peroxide lightened it but Resolve (type of oxyclean) took it out completely. Are there warnings on the packaging not to use on the right side of fabric?? I have used this marker before but always on the wrong side and also for dressmaking.