Does the turf have to be installed onto dirt? Could you just lay it over pavers, or would a dog relieving himself on that sort of installation cause a problem?

You can install our Pet Turf over any hard, flat surface. Our turf has been installed over concrete and asphalt pads with great success. If a dog were to urinate on the turf, it would seep through the turf to the concrete below. We recommend not gluing the turf down so that you could periodically clean the subsurface from time to time. This will help to help to reduce any unsightly odors. If you do glue it, we do offer a range of products that help with reducing odors. Our Turf Fresh and Zeolite Max products are great for this and are safe for pets and very easy to use.