Spray Adhesive advice to repair speaker grills???

I recently bought some spray adhesive to repair some speaker grills - to reattach the cloth firmly to the plastic frame around which the grill cloth goes. It is a small pair of bookshelf speakers & 1/2 to 2/3 of the grill cloth is in tact and the rest is loose...

I took the grills to a furniture reupolsterer and he recommended masking off the grills and using the spray adhesive...

Does anyone have any experiences using spray adhesive in a similar application? And what do you recommend?

I was thinking rather than spending a lot of time masking off things (which is extremely difficult to do in this situation), I wonder if I could spray the adhesive onto a glass surface and put it on the plastic grill surround with some kind of brush or other applicator? That would make it much neater and easier to do.

I look forward to hearing your comments and experiences with this stuff. Thank you.