I am a pre-washer of yardage too (allergies, and to reduce shrinkage/bleeding). I starch right before I cut. I hear it isn't good to leave fabric stored with starch (bugs). When working with precuts, I starch those also. I like the starch in the pump spray better than the aerosol - usually get Niagra. I also like the Bounce pressing spray. The scent can be strong, but I like the way the fabric handles when I use it. It is especially important to starch when you are working with bias. Keep in mind the finished quilt...for instance, the french braid in my avatar is made from straight cuts, but trimmed it exposes bias edges along the braid sections.