We do our best to teach dogs that going outside is the best place to potty, but there are accidents and marking at our facility due to the many smells and many dogs. If your dog has accidents at daycare, it is unlikely to “ruin” or “undo” your potty training at home. Dogs are very intelligent and they easily can learn how rules differ from one place to another. As long as you are consistent with your potty training efforts at home, daycare accidents should not affect your progress and training.