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New Roomba combo bots have swappable dust and water tanks | Ars Technica
(arstechnica.com)
This is a most excellent place for technology news and articles.
There are models that actually do some level of movement. The Roborocks now have vibration on their mops. There are Dreame robots that have dual circular pads that rotate. Either should be better than said damp mop. I did use that with the last robot and I have to say it does help, and reduces the number of actual mopping sessions.