I spray my fabric with a 50/50 solution of starch/water. I use a plastic dishpan to keep the overspray in check. I bought a spray bottle at Sally's Hair Supply that has a fine mist. Once I have sprayed both sides I roll it up and put it in a plastic bag to mellow, much like we did back in the day when we sprinkled clothes to iron. I go do something else and when the starch has had a good time to absorb I then press the fabric. No flakes or gunk left on the iron this way.