I use the spray all the time. Some brands are slightly better than others, but I buy what I can get on sale. What I discovered is this trick: Always spray the fabric and NOT the batting. I believe that the spray goes into the "pores" of the batting which wastes spray and makes for lousy adhesion. When I sprayed the fabric which is smoother, I had no problem with adhesion on the same quilt.
I hope this trick works for you.