I had several cracks (one garage, one porch, one driveway) that I wanted to fill to keep water out and prevent them from becoming rapidly worse. So I bought this product.

The product itself comes in the consistency of a sandy drywall spackle. It also sets/dries fairly quickly, so you only get a few minutes to work it into the crack. For smooth concrete where the sides of the crack were even, I found the pushing it in with a putty knife and then scraping the excess immediately (working in 1-2 foot sections) worked well. For textured concrete, I worked in small runs pushing it in with a gloved finger and feathering it as I went. It dries hard in 24 hours and seems to be functioning as advertised.

Used this to patch a moderately large chip in a sidewalk. Wish they sold a smaller pint size since I didn't need this much. This is the smallest size you can get as far as I know, which is 1 quart or 4 cups. It comes in a plastic tub container with instructions to use a screwdriver to help you open and a hammer to close it. You can open and close it by hand, but I get why it might sometimes arrive open by mail since the plastic lid is easy to deform if something lifts it up. My plastic tub arrived fine and the material was not open or dried out. I got the package with the plastic knife set. You could probably buy this cheaper in a big-box store, so you're paying extra for the convenience of delivery.

It's a lot lighter in texture than I was expecting. Other reviews call it "fluffy," which I would agree is the best description of it. I thought it would be denser, but it has the texture of cake mousse. I do wish it was a little denser so it would be easier to scoop and pack into deeper cracks. It does have a tendency to stick a little to gloves and spreading implements. I used the plastic knife set, but maybe it's easier to spread with a metal knife. I was worried it wouldn't set due to the texture, but it seemed pretty hard and dry 24 hours after the patch. I did apply it on a summer day where temps were between 70s and 80s. Didn't shrink, but it seemed to sink down a bit and "level" into the crack after 24 hours. I could probably do another layer, but I'm waiting to see how it holds up to rain and whether it will "melt off" like some negative reviews mentioned. So far, so good though.

Buy the gallon size. It works great but plan ahead don't use it before rain is expected because it will not harden and makes a mess. The average person lacks common sense and WILL walk on it with their pets RIGHT away after you put it down so block it off AND put a sign up!

I bought this because a brick wall I have lost some mortar and rain was sliding down inside my garage and washing more away as well I was getting water puddles inside. This stopped it by sealing the top bricks and has stayed dry since. you should have a little rod or something to push up the clups that make it hard to push more out if you are filling large gaps
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Very simple stuff.
Easy to use....