A number of years ago, after about fifteen years of marriage, if I remember correctly, my husband was in miluim, army reserves and I did some of my Passover shopping in Jerusalem with a neighbor. He told me about his wife's family custom, the "Sponja Gedoila," which she grew up with being from a family that had been in Jerusalem for many generations.
Just before bedikat chametz she washes the floors of the entire house. And ever since, I do it. too. This isn't a thorough cleaning, which had just been done recently. I just quickly go over all of the floors with a damp cloth, Israeli style. In Israel most floors can be cleaned like that. If your home is carpeted, then you'd do a quick run with the vacuum cleaner and wash the toilet and kitchen floors.
And then I sit in my favorite corner of the couch while my husband does the ritual inspection.