Modern pool robots have come a long way. What used to be a temperamental gadget is now a reliable, "set it and forget it" tool that handles most daily and weekly floor cleaning, even when you're not home. But they aren't a total replacement for manual cleaning.

Manual cleaning, a scrub brush and a vacuum, is cheaper and reaches everywhere a robot can't. The real answer for most owners isn't one or the other; it's understanding what each does well.