If it were that easy, this would have been solved everywhere already. A day or two is almost certainly not enough, you also have to do adjacent apartments (whose inhabitants probably aren't going to be very happy, especially if they have to leave for the fifth time), your map can show that it affects like every other building (especially when it's a large apartment block), the temporary housing is at risk of becoming infested too, which will make people fear being there, etc.

It actually sounds a lot like zero covid - simple on paper, you try it, you find out it doesn't really work, and then you're left with the choice to either change strategy or try to go harder and cram it through regardless.