It's very easy to apply if you have a backpack sprayer. Has plenty to go over two layers for my front walkway and 3 car side entry driveways. After application I was skeptical if it's going to do anything, since I just can't tell difference before and after. Until a week later rain pouring down, the driveway looked still dry from my Nest camera. I walked outside to check, water formed puddles and rolled away from concrete. Rain didn't penetrate into concrete like before to make darker wet color. I guess the sealer worked perfectly. Hopefully it will last 5-7 years as promised.