Re: Why is it that all my sims keep going thru doors I've locked against them?

@oGAMER_BRATo You can't put a stop to roommates inviting others into the home. And if it's a shared room, it's their room also. Unfortunately I've had roommates with girlfriends that may as well live there they're over so much. Plus there are suddenly 'roommate parties' that you have not thrown yourself that involve a bunch of their friends coming over and hanging out all over the home. I found that rather annoying, as I had my roommates in a family home. You have to be willing to 'go with the flow' on some things with a roommate. You can ask the person(s) to leave, though.

If it's a sim in your household so you have control over them, you have more onions.