I bought a gallon bottle of Elmer's washable school glue for less than the cost of 1 can of 505. I dillute it with about a cap full (or a little less) of glue to 1 spray bottle of water, shake, shake, shake, & spray it on. As long as I wash out the sprayer when I'm done, it works great. At this rate, I will be as old as dirt when I get to the bottom of this gallon jug.