i plan on framing the inside of my kennels with 2x6's. then laying down a few inches of sand to level out the ground as flat as possible so i can place 1x1 pavers in there. i reckon it will be easy to clean, and hard for them to dig out!

sb, those are very nice! im curious what the cost of lumber is vs the cost of cement paver.... that set up you posted may just be the way to go.