RustOleum 284595 Tile Red InstaPatch Concrete Repair Kit - 1 Gallon (2 Plastic Bottles) for Driveway, Sidewalk & Basement Crack Fixes

I thought it worked great once you understand how to use it. It cures ultra fast and goes from a very runny liquid to harder than concrete in less than a minute. You literally have seconds to use it so just mix up small batches in a plastic containers. Pour it into the cracks and sprinkle sand on it real quick before it starts curing.