I have three dachshunds, ages 7 months, 4 years, and 8 years. They bark constantly and use the house as an indoor bathroom. We keep them hooked to leads in the dining room during the day when we can't be playing with them, and they sleep in a crate at night, but they use the bathroom in there. We give them frequent walks and scold them for barking, but nothing works. Is there anything else that can be done?
It sounds like you need the help of a professional trainer. Your best bet is to call your local vet and ask who they recommend. vetcare