I will be doing this after the fulll moon passes.
But it is a simple house cleansing spell and I do it completely un-ritualistically.
I take a bag of sea salt and sprinkle it around my house.
When I am in my house will sprinkle sea salt in every corner of every room.
usually reciting "My home is my haven all darkness be gone. God/ Goddess surround me with your protection, warmth and light."when done light some white colored candles with either Lemon scented oils or Gardenia.
Not only will your home be less negative but will also ward off negativity.
It is also customary that once I am done I will usually take a sea salt bath as well. To get the mind body and spirit in order.
Or you can follow up with some light meditation and yoga.