I love the spray, but what my LQS lady told me about doing it very lightly is so true. No gumming up your needle worries. The smell is awful. I'm lucky in that I can put the quilt out in the sun room, open both sliding doors to the outside and then spray. Nothing gets in the house and no chance of flammable fumes. The project I'm working on now hasn't moved a bit and has been a dream to quilt.