You fix this by doing a cycle of vacuuming first. Robots allow you to clean frequently to prevent large buildups. It's the same as if you were cleaning by hand. I have tiles as well and no dirty water marks.
i have robot running daily. it will never pick up 100% of everything. because if it would have picked up 100% there would be no need in mopping.
when i did robot shopping year ago, based on reviews and feedback it (vacuum before mopping) doesn't always work and the more polished your floor is, the worst the outcome
No, mopping is not for dust, but rather for sweaty/greasy/sticky matter that accumulates and can't be recovered by vacuuming. This is why proper cleaning is vacuuming + mopping, and it was like this before the invention of the cleaning robot.
You can also mix a non-foaming detergent with the distilled water to have an even more thorough cleaning (or just ask the robot to pass more than once). Robot mops are typically rougher to compensate for the lack of detergent, though.
It's the same for professional car cleaning - it's done with distilled water. If what you said was true, it would be impossible to clean cars as they are much more polished than tiles.
so it's going back to square 1: sweaty/grease/sticky matter not going to be picked up 100% by mop after it was diluted by water. distilled water or not distilled water.
this is why floor buffers exist. to buff the floor so it will be nice and shiny.
professional car cleaning usually made with deionized water. much easier than bringing distillery. but even with usual water on my car there will be usually no marks after wiping it with towel.
> sweaty/grease/sticky matter not going to be picked up 100% by mop after it was diluted by water. distilled water or not distilled water
Most of it is picked up since it is retained by the mop, which the robot can then clean at the station.
And unless your flooring is made of mirrors, you'll hardly notice after two passes, or if you run a deep mopping mode, especially everyday. Tiled floor in houses is typically not mirror-like in order to absorb sound.
Most industrial robots cleaning shopping malls work like this and don't have additional equipment to wipe the water dry.
