I'm almosty too embarrased to admit....When I adopted Logan, i used praise as a reward. However, I was getting worried and frustrated that every time she went out for an outie, she never did a thing. She gets easily distracted with the squirrels and russling leaves and people walking by. So I started giving her a "Lite" dog cookie after she did her duty, and within 1 day, she learned that everytime she comes back inside, she jumps up and down, looks at her cookie jar, barks her "Rrr Rrr" and gets a cookie. So now she gets praise AND a cookie! Yes, I'm wrapped.