We rescued a dog about a week and a half ago and are having trouble training the dog to go outside. She is 1 1/2 year old boxer mix. She has messed in several different places in the house sometimes twice a day. She has also had loose stools. We gave her Tripe mixed with her food for a few days, but that didn’t help. We are back to dry food (last 24 hours) bust are still having a problem. Any advise?