Backyard swimming pools can be a lifesaver in the height of summer, but those afternoons splashing and cavorting in the crystal clear water would not be possible if the mornings were not devoted to cleaning the pool. And cleaning a large backyard pool is no simple feat, unless you have a pool cleaner.infrared sauna benefit But the most remarkable feature of the Navigator pool cleaner is that it is capable of “mapping” the contours of your swimming pool so that it remember which areas it has already cleaned, and will not return to them until it has completed a sweep of the rest of the pool.