I set up a space along the side of my house when I first got Alex. We taught him to pee there, and he's had an affinity for pea gravel ever since. I just spray it down every couple of weeks, and occasionally hit it with a diluted chlorine solution. It works great.
I would have to jack hammer up some cement to put some down.
The entire side yard is cement from the 1940s or 50s (kind of nice old stuff but I could get rid of a segment of it and teach the dogs to go there)
Great idea Tyler, sounds like it would be a pretty sanitary way to go also. Would even like Todds way better, but don't think it would be real easy to teach dogs to use a toilet, so thats pretty much out of the question. Besides that if Todd put a toilet outside for his dogs, I'm afraid he might find a big bear trying it out, maybe the same one that scatters his flour all over.