Robots will clean our house for us while we sleep

I'd like to repeat that, since it makes me so happy:
Robots will clean our house for us while we sleep.

Alright, it's actually "robot", singular. For now.

It's an iRobot Scooba, a hard-floor cleaning robot. It'll do our kitchen floor in about a half hour. It should be safe on:

• our bathroom tile and slate
• sealed hardwood
  
• concrete floors

It should be unsafe on:

• the cat
• all those who threaten us

and, eventually, (when it becomes self-aware on December 20th, 2019)

• us