Ok so I have had my puppy for almost 3 weeks and have not even tried to put him in the crate. He gets free roam during the day and when I cant watch him I put him in my room with the baby gate up. I would like to crate train him for when we leave the house or go on vacation and he needs to be at some one elses house. How do I start? I never leave the house and when I do my husband is home with the kids so he is never really left alone. Thank you for any advise.