Hello everyone, I have a 3 year old Maltese which was trained easily with crate and by regularly taken out to pee. It took her a very short time to completely learn it with no accidents. Now I got a new puppy which I will receive next week. But I am working now and the puppy will be home alone for 8 hours. How can I housebreak her? Do exercise pens help? I want this puppy so much but I do not have any idea how she will be trained. Thank you very much.