When people refer to crate training, how long are you supposed to leave the pup in the crate for?  My baby is 14 weeks and we are still having a tough time training him...I never did pee pads bc I wanted him to learn to go outside so I just constantly take him out.  He goes like clockwork in the morning and at night but seems to be a little machine all day, peeing in little places all over.  I feel like I should have done crate training from the get-go but I can't bear to leave him in a tiny crate all day 

  So I guess my question is....is he in this crate just during the day or is he supposed to stay in it even when I'm home from work?  Advice would great!!