I purchased the Flex Seal White Paste, to fix a rather small leak in the upper part of my 35"X 45" window. After I opened the container, I noticed most of the paste had ALREADY HARDENED INSIDE THE CONTAINER. What was still soft inside the container was very rubbery and quite difficult to "spread evenly" as per the instructions. The result was just a mess. NOTHING LIKE THE ADS FOR THIS STUFF ON TV! These folks outta be sued for false advertising...