Haven't read through the whole thread, but just want to say, Naty, that I think it's beautiful that you have such a good relationship w/ your PILs, overall, and that you appreciate them. Sorry for the dropping by problem, but think you handed it well when you simply didn't answer. I don't believe they "don't understand" that you want them to call first, they just don't want to do it. They are used to dropping in, as you say, and they've gotten away with it, so they think they still can. At this point, you need to show them, IMO (as you did the last time), not try to ask or tell them. Don't come downstairs when they're at the door, don't get up from the couch, etc. If they see you don't answer when they don't call first, hopefully, they will learn to do so or stop coming over when uninvited.... Now to finish reading the thread, LOL!