I am in a group that makes quilts for people with cancer. We are using the Sulky KK2000 because it seems to be the most hypo-allegeric. So far we have spray basted at least 10 quilts, we only started using it recently. I recommend spraying in a open air area. You don't have to spray it thickly just a bit like you would use to hold hair in place. We hand quilt everything and have never found a stickly residue on our needles. This particular spray is considered temporary, but lasts us for over a month. I don't know if it lasts longer as we are usually finished quilting it by then, we do simple designs.