I have used GG with and with-out water. I have also used Elmers Ultimate glue with and with-out water. They are nearly identical in properties and results. But Elmers Ultimate glue is less expensive. Both need NEED N E E D water. On an extremly humid day they work fine with no water, but why risk it, just mist it. Does not take much.
The best way I have found is a spray bottle on mist setting. Too cheap for that? Get a mouthfull and mist it out... nasty/gross/disgusting, but it works.
Also, using too much Gorrilla Glue or Elmer ultimate glue causes the catastophic collapse into powder. There is not enough solid surface for it to hold to and it just grinds itself in to nothing.