Spray to keep blown-in cellulose insulation from drifting?
I tried the diluted white glue (Elmers) and it worked well. I diluted it about 1:5, glue to water, and put it in a spray bottle. I then stuck the spray head up into the slot and sprayed indiscriminately. It sprayed well, looking like skim milk. When it dried, the cellulose was indeed (at least loosely) bound in place.