just stay consistant. nothing is going to work right away so whatever method you are currently doing may actually be working, its just too early to tell. good luck. our hardest dog to potty train was our dachund. one thing you can try is when ever he goes to the bathroom out side give him a treat. we usually just use dry dog food as a treat, and they dont seem to mind. they still act like its something rare and different. even sometimes, months after she was potty trained, she still sometimes goes and stands next to the shelf we keep the treats like she did when we were potty training her. is your yard fenced in? if so that can make things easier. installing a doggy door is really easy (at least it was for us because we have a sliding glass door.) it really helped because she could go out to her hearts content. even now as i am typing my other dog is outside sitting in the sun and will probly be in any second to bug me, because its almost time for them to eat. everytime you take her out of her cage, take him outside. stay out with him for at least 15 minutes. when he does go to the bathroom inside, grab him and make him look at his 'accident' and say really sternly NO. this helps too. dont shove his face in it just make sure he sees what he did and learns thats a nono