And, as I mentioned before, just because it is in garbage bags does not make it just garbage. I have only 1 child and she can make a mess. I am constantly nagging her about picking up toys and clothes. She has a small room and the entire floor of her room can get covered between toys left in the floor and changing clothes and just dropping them. Some mothers do not make their kids clean up after themselves as they should, and sometimes you just cannot make them do it.
To get the floor, they would have to remove the clutter. They could not just scoot it over or brush it aside. And the family was still in the home for days after she was reported missing. There was probably new stuff piled on top of the items that were there that day.