It was in North Dakota, and I wonder if this is what he was using. I remember him going on and on about how environmentally friendly these pavers were and how t

It was in North Dakota, and I wonder if this is what he was using. I remember him going on and on about how environmentally friendly these pavers were and how they could filter water and last a longer than normal concrete pavers have have virtually no maintenance costs. Either way, it looked really nice and had me thinking about the maintenance and costs of my yard.