The outside concrete step that I paid $400 to repair last year had a crack in the corner and a crack where the repair was done. This material held the piece in place, filled the cracks, and dried in a day. No bad smell. I fiddled around a bit to figure out how to cut the nozzle tip. I just wish it had a lid that I could put on the top when I'm done so I could use it again in the future. I highly recommend this product.