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A pool robot that stops climbing walls usually has a clogged filter, worn brushes or treads, trapped air, low battery or the wrong mode. Here is how to find the cause and fix it.

Most pool robots pick up sand, but only a fine enough filter keeps it. Here is how filters handle sand, where pool sand usually comes from, and how to stop it coming back.

Most pool robots clean floors and walls well but struggle with steps and shallow ledges. Here is why, which robots reach shallow platforms, and how to keep steps clean.

A clean filter keeps a pool robot's suction strong and its runs complete. Here is how to clean it after every run, how to deep clean fine filters, and when to replace them.

A manual vacuum costs little but takes your time every week. A robotic cleaner costs more but cleans floors, walls and often the waterline on its own. Here is how they compare.

The Beatbot iSkim is a solar skimmer built for long, simple surface cleaning. The iSkim Ultra adds planned paths, side brushes, more sensors, clarifier dispensing and magnetic charging. Here is how to choose.

A skimmer robot catches floating debris before it sinks; a floor robot cleans what reaches the bottom and walls. Here is when one is enough and when a pair saves work.

A solar skimmer has a battery, motors and a solar panel that all need care in the off season. Here is how to take it out, clean it, set the battery and store it so it starts strong in spring.

The Mowrator S1 4WD comes in three tire setups, each rated for a different slope and ground. Here is how standard wheels, wide wheels and Grip Tread tires compare, and how to pick.