Magic had a severe case of SA. It's not completely gone but within two weeks she was satisfied that I wouldn't leave her forever. We have three "safe places" for her in our home. Her crate, my easy chair and an occasional chair. She also used to sleep with me but for a the two weeks of training I put her in her crate out of my room. She was brushed up on her stay technique, put in one of her safe places and told to lay down and stay as I walked out of the door. There were many times that I'd have to stop and correct her by puting her back in the chair, etc.. but now she goes readily and doesn't require any further correction. (also it saved my screen door, I'd replaced it three times a month before I hit on this training)