experienced dog owner PLEASE HELP HOUSE BREAKING PROBLEMS
we adopted a dog about 2 months ago. I have house broken at least 20 dogs in my life. we take him out with the big dog about every hour to 2 hrs. sometimes he poops outside but about every 2 to 3 days we get a suprise. he has tried every room in the house (if I remeber right this is part of learning to go outside) we rub his nose in it and stick him outside for 30 min to an hour. I have never had this much trouble house breaking a dog. we bought puppy pads and he changed spots on us again. if he whines he gets put outside. (this is how I teach them to tell me they need to go.) if he whines for anyreason he gets put outside. this has worked with all of my previous dogs. why am I having such a hard time breaking him. he should be broke by now. if he hunts he gets put outside. this is how I did my puppies. any ideas I haven't tried?
edit forgot to add he is kenneled at night and when we are gone. he gets kenneled for a while after coming back in from outside.