You're a brave soul, or maybe we mistake arrogance for bravery. If that is the case, it is not the worst kind of arrogance, it comes from long held habits of yours - ease and success. Not that you didn't work for either - you did - but your life is more charmed than you think. In a moment of both weakness and strength - and those are rare, magical moments - you invited darkness into your house. But like your arrogance - if that is indeed what it is - this is not the worst kind of darkness. Neither evil nor harmful, it is dark only in color, not in essence. And so, for all of these reasons, you are not afraid to let it stay with you for a while.
Because, if there's one thing you know, it's how to clean a house. You carry the supplies - a full range of products and equipment - from room to room. Darkness gone, you will remove every trace, every scent, every remnant, every hint of anything not inherent to this home. Bright light returns and the shadows disappear. Which is how you like it, right?
This helps, for a time. You do not understand why it doesn't help more.
Didn't anyone tell you? Even clean, your house will be haunted. The whisper of memories will swirl around you, hidden behind the smell of pine and vinegar and bleach. You will be frustrated at every corner you turn, a secret wish - unknown to your mind that masters - to see, to feel what is no longer there, no longer yours - a wish that will never leave you alone.
There is no cure for this.