Day 9 - cleaning without lifting a finger

Something got into my kids today; I don't know what it was. In exchange for erasing some allowance debt and some extra quarters, all three of my kids lit into cleaning today. Without my ever getting up:

• "The pit" was completely picked up and swept - needs a serious mopping but that's another story.
• The popcorn machine was more or less cleaned out.
• The pantry was organized.
• The sink and toilet were scrubbed.
• The dishwasher was unloaded twice and loaded once.
• A load of laundry was done.
• The fronts of the dishwasher, oven, refrigerator, and freezer were scrubbed.
• The German shepherd got a bath.
• One of Mom's boxes was emptied.

This was all on top of their usual daily chores, which between them include picking up and sweeping all kids' bedrooms, the bathroom, and the living room.

Who are these kids, and where have mine gone?