No treats or rewards for pottying. I simply name it when they do it so it turns into a habit when they hear the command after a few weeks.
If you use treats for this they quickly learn to "have to go" a zillion times a day.
Deja, GSD, sable WL, female, born 11 / 2013
Cam, Rough Collie, sable, male, born 8/2015