If you have a railing or clothesline, or fence outdoors and hadn’t thought of it, you can hang your pieces and spray them. When they are too big, I just fold them right sides together and spray and flip. On my railing I just throw an old sheet over it first to protect the quilt from picking up dirt and the railing from the spray, that the rain will eventually wash off. Ironing your quilt sandwich afterwards sets the glue, even though it is still repositionable, but also highlights areas where you may have a potential pucker and can straighten it out. Iron front then back. 505 is also my spray of choice. Have never had an issue with gummed up needle with it. Joann’s online is where I bought my spray in large cans when on sale.