Knock knock!vampires infront if the door.

I just had Vlad break in and suck my sims’ blood a couple of days ago. However, I just locked the door for everyone except my household members and grew a garlic plant at the entrance (and other places such as my sims bedroom). That really seemed to do the trick, as now although vampires keep coming to my door, even when my sim is asleep they won’t come in at all, even Vlad. Also, the garlic plant makes them very uncomfortable so they don’t generally stay that long.
Also, I think there are some higher Vampires that have the power to enter places uninvited? I can’t remember it off by heart though. Which would explain why some Vampires would enter inside without being invited.
Locking the door has proved to be successful until now though.