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The Eufy Omni S2 improves on its predecessor with four times the suction power, and an odor-free mop roller.
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The Eufy Omni S2 stands out the moment you unbox it. Aside from its unique shape, which is much taller than most robot vacuum and mop combos with a hands-free dock, Eufy directly improved on the shortcomings from the S1 model.
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For about two years, the S1 was my favorite robot vacuum and mop combination. But as good as it was, it had issues -- some were glaringly obvious, others less so. For example, the detergent container ballooned as it filled with air when it was emptied, causing issues with the clean water tank. Eufy repaired this with the S2 by adding a vent to the top to allow airflow as the liquid empties.