Perry and Daisy always go to a designated area, we walk out with them and they run down to the end of the patio which is cement and they go there. However Perry likes to lift his leg in different places, the tree, post, fence etc. etc. But for pooping it's always in the same place and I usually tell them to wee wee or poo poo, they know what either means. It's much easier to pick up and wash off the cement.
Jackie