This is indeed one of the better horrorfilms I've seen this year, but mind your expectations if you haven't already seen this. Because it is nowhere near as good as the first trailer or the photograph earlier in this thread. This is a solid horrorfilm, not a great one.
Apparently you don't actually need to invite it in.
The good news is you can puke him up and lock him in the basement. Problem solved, apparently. Also, since I have the spoiler tag going...
That kid was more relentless than was required. I almost needed a week's vacation after watching that.
The sound design was... Totally uninspired. This really is a pretty good horrorfilm, but I wouldn't have to look far to find ten with better sound design.
Given such a playful and child-like introduction, Mr. Babadook is a strictly by the numbers sort of boogeyman. I was expecting a dash of childlike with a sprinkling of absurd beyond Mr.B's book. Sadly the closest thing to it was Mr.B's reduction to something mewling & worm-eating at the very end.
Finally, I kind of wonder how the house didn't collapse on the lot of them. Not that the house collapses in any of the other 50 million horrorfilms that has the Shake-The-House-Apart scene, but perhaps it should in the next one.
EDIT: Spoiler tags, how do they work... Derp.