High density fiberglass as bass absorber?

I've read for days concerning various DIY bass traps. Tubes, resonating panels, Helmholtz resonators, and all manner of rigid fiberglass designs with and without air gaps and with and without limp mass membranes. For the moment I am interested in quick and dirty bass absorption with no regard for aesthetics. Rolls of insulation stacked in the corner are said to be useful.

From what I've been able to gather, generally the effectiveness of fiberglass products increases with increasing density. Owens Corning Atticat fiberglass insulation comes packaged in plastic bags having dimensions of about 9"X 20"x 38" (about 4 cubic feet of volume). The weight is about 35lbs. Therefore, as packaged, it has a density of about 9 pcf. With OC 705 having a density of about 5 pcf, would we not expect Atticat to be a bit more effective at bass absorption than OC 705 per unit volume?

I don't find any mention of anyone trying to use this product as a bass absorber. I'm gonna try it, but before I do, perhaps someone out there can tell me that it doesn't work or why it won't work. Anyone?