Ok Gorilla Glue it is! On the note of things eating foam. I spray painted some styrofoam heads last year and noticed that the paint ate away at them a bit. Not a big deal as I just wanted a darker texter for under my masks. But great stuff seems to be working great! I was struggling with a piece of crap airbrush to paint my 30 some skulls. After giving up on that I tried spray paint and it works fine, no distortion. So I don't know if liquid nails is more potent, but spray paint works fine.