I use them for everything....can't stand the shorter ones with the tiny flat heads. When I'm piecing, I just pull one out at a time ahead of my sewing.... They are easier to find when there is a stray than the others too. I put them in at a right angle to the seam I'm sewing (with the yellow head sticking off the fabric and then pin double stuck into the fabric) so if I miss one and sew over it, no big deal.