My son brought home a puppy she did real well of a while then my son moved left her here and once a day at night she poops on the floor now my year old is doing it to now my roommate wants them to live out side need help

You should tell your son to come and get the puppy. Do you like the puppy? Do you want it living in your house? If you don't tell him so. :)

I don't mind her staying here and he never properly trained her on this.she did good for a while but now she's doing it again and now my older dog is doing it and she always scatches at the door to go out.