I have two males in the house, and one female.
The male shih tzu, I have trained, because I have had him for a long time.
But the terrier we just got is male, and a year old, and has no clue. What's worse, is when he pee's inside, it makes the dog I have house trained pee too, because he has to mark over his spots. It is proving to be really hard to train the terrier to even understand what a leash is. Even though he is a tiny dog, he has apparently spent the first year of his life running wild and free.
We bought a chainlink dog lot to put the untrained members of our family in.
The terrier and his female "wife". We set it up in front of the house, and a bear demolished it, thankfully
before the dogs were in it. Where I live we have problems with bears and mountain lions, and the occasional wild cat, so I hate to keep a dog as small as a jack russel out side without it being 100% secure.
So I have had them in doors for a month now, and I take them out to the repaired kennel through the day, and back in at night before predators start hunting. At night, there are at least 3 puppy pads down, but there is always at least a few times at night that they pee on the carpet. If it's not caught, it begins to smell a lot like a gas station bathroom. So I am going crazy all the time taking care of dogs, and scrubbing carpet.
Being a savior of dogs is not easy.