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Roomba was literally my first buy (big house, lots of hardwood). Then I'd say fill it out slowly and check everything month. For instance, I do the rounds the first of every Sunday. Change filters, check subpump, look for cracks, etc. Track humidity. Get a dehumidifier if in a humid climate (even just the Midwest), and track humidity. I personally have two monitors, and it's saved me a couple of times.

If it's a new build make use of the warranty.

Oh, and it's a lot of work and things always break. Just remember to fix them when you have time and don't worry about scratches or dents. Paint and spackle should happen all at once, so give it time.