i had the same problem... i didn't know if i was confusing my girl by putting a pee pad in her x-pen.. whenever i am home she goes outside.. so i did it anyways, she is almost a year now and she gets her pee pad in her x-pen while i am at work, for 6 hours, and she actually goes on it but the poop rarely makes it on the pad.. but pee, always.. and when i am home there is no pad down and she always goes outside to do her business, she has not made a mistake in the house for probably 5 months.. good luck to you!! it takes time