Housebroken Dog Peeing in the House?

My 3 year old Shepherd/hound mix is housebroken. I also have a 14 year old Pug. During rain, both dogs have been peeing and pooping in the house. Now when it does not rain, they still do. They have access to the outside through a petdoor. The Pug has recently been going out on regular basis after spraying with urine odorizer. My Shepherd has been peeing during the night. Is she stubborn? Because she does go outside. We have ripped up the carpet because of all the smell. There is just concrete. They go outside on the concrete as well.

By Kelly M.