Black poop can be harmless, caused by certain foods or medications, or it can be a sign of melena, meaning there’s blood in your stool. Melena happens when bleeding occurs in the upper digestive tract ...

It also handles pet hair without tangles in case you have furry roommates. The Dreame and Roomba hybrids on this list have their own advantages, but the Deebot X2 Omni is our top 2-in-1 pick ...

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