House Training a Rescue Dog?

I rescued a 1 year old Mini Pin. We are his first owners. He is doing fairly well with our other Mini Pin (also a boy) that we rescued from the street, and a 18 year old Maltese mix. I feed them early in the morning usually about 7 am, put them out right away to go and they usually do well. And when they don't want to go in the rain they go on pee pad.

I give them about a 1/4 cup of food usually around 2 to 4 pm. I figure that they should be well done doing their BM by then. However, the new dog goes poop in the middle of the night in my daughter's room. Both Mini's sleep with my daughter. Please, any suggestions on timing of feeding and perhaps a good dog food that produces less BMs and gas.

By Sarah from Yucaipa, CA