Who was physically in the home, running it the past week/two weeks?
or the week when Jon and Kate were both gone a few weeks ago?
I do not believe that Jon or Kate participate in the day to day upkeep of the home -- laundry, changing bed sheets, cleaning bathrooms, vacuuming, dusting, etc. I'd be surprised if Jon or Kate mowed the lawn or took care of their landscaping. I'd also be surprised if they took their cars for oil changes and tire rotations, in spite of Kate getting her own gasoline.
I do believe that Kate does prepare meals, sometimes. I also believe she pays some of the bills. We've seen Jon and Kate take the children to appointments and to the school bus. Occasionally, Kate runs errands at Target and the grocery.