I've got two small patios with small grass patches at my townhouse. The grass patches are used as dog runs by two medium sized dogs. Grass is killed and turns into a mudhole in about 6 months.
This product solved my problem completely. I used I used branch trimming shears to cut it to size. Looks quite realistic, like freshly cut lawn. Drains the heaviest rains in an hour. Took about an hour to install and used a handful of "lawn staples" to peg it into pace. Now, solid waste is easily picked up for disposal. I hose it down maybe once a week. The dogs both took to it immediately. An unexpected benefit was...no more bugs. Population of flies, etc dropped drastically and quickly. Time to sell my grass trimmer and get rid of my spare bags of topsoil.