I USE THIS INSTEAD OF LIKING MY ENVELOPES (SOMETIMES FLYS LAY EGGS ON THE GLUE AND IF YOU CUT YOUR LIP YOU CAN GET THEM IN YOUR SORE. ALSO SOME GLUES HAVE BLOOD IN THEM EVEN IF IT IS ANIMAL BLOOD YOU NEVER KNOW)
I use this product for art projects in the clasroom. During heating season the adhesiveness doesn't always last. This is problematic if I am trying to display student work.