3. Smart Mop
iRobot Braava 380t Robot Mop
Just like smart vacuums, smart mops are able to navigate around your house. Instead of sucking up debris, however, they spray jets of water and wipe over it with a mop attachment. Some mops also have a sweep function, in case you need them to clean up a bit before adding water to the mix.
Many of the companies that make smart vacuums also have smart mops in their catalogs, such as the iRobot Braava 380t Robot Mop which comes from the same makers behind the popular Roomba.