I do not use any spray products. A lung disease (not smoking) wiped out 60% of my lung function. Too often, I have seen where a product is considered safe, only to find out it has harmful effects. I cannot afford to loose any more lung capacity. I use the curved pins to baste small quilts. I quilt my larger quilts block by block so I use the pins on those too. I plan to try the method with the boards and hand basting. Just saw it recently online. Now if I can find that site when I need it. :)