FYI for anybody still interested in this question.
I used spray to adhere something I was thread sketching last week. I washed the piece thoroughly in hot soapy water right after the embroidery was complete. Today I started to use the piece, and lint was stuck here and there to the gummy residue that remained on back. I soaked it again, washed it again, more soap and water, and added a soapy toothbrush to get tougher with it. A little more came off, but still a fair amount present. It has now transferred to my ironing surface as well. So, I am pretty sure it would not wash out from the inside of a quilt if I am applying direct action and can't get it out.
Between the initial fumes and the semi-permanent residue left behind....not too sure this is a good idea for me.
Last edited by QuiltnNan; 08-10-2020 at 04:34 PM.
Reason: remove extra blank lines