I ordered a can of this to test against the adv***ech product. When I opened the can it had already oozed out a little, which may have meant it was a bad can but I had to use what I had, what they sent me. I picked off the dried chunk and did a test set of blocks glued to adv***ech subfloor. Thisl peoduct worked okay. Stayed slightly spongy and held okay, then broke off clean leaving the 2x4 almost completely clean and undamaged with the glue on the subfloor. The OTHER product dried to a rock solid state, held extremely tight and did not fail. The purple glue actually held better than the subfloor and took chunks of floor with it when I was finally able to break it off. I guess it worth the money after all.