I use the spray baste from Hancocks and I don't think it would take a whole can to baste a queen size, but I don't make quilts that large so I'm not sure. The regular price is about $12.00 I think and I always use the coupon or get it on sale. I do several twin size from one can. Also, I always spray baste using the foam board insulation pieces and open windows when I work on the inside. One day I moved everything outside and sandwiched 8 or 10 quilts...easy peasy.