I use the June Taylor Quilt Basting Spray bought at WalMart. Be sure you really shake the can 2 min or more before using - otherwise it won't stick. I do put a few pins in mine until I have sewn the center a bit to anchor the layers together. I also pin around the edges because I think that really gets a workout! I tape my backing to the carpet, then go outside to sprat both sides of the batting and when it's in place, I place the top on the batt. When it looks OK I do the little bit of pinniing. This washes out when the quilt is done and works well for me. Couldn't do without it! :P