It’s a fine pool cleaner in the shallow end, but my pool has a kidney-bean shaped diving end (about 9 feet at the deepest part, but that wasn’t the problem.) One side of the the slope very gradual but one side is more steep. Once it would get to the deep end, it could never find the gradual incline section and just Tony Hawk in the deep end until it would run out of battery in the dead center. I had to go down and grab it. It should have been able to get out, (once it did, so I know it’s possible) but it just wouldn’t. So it works, but just not as well as it could.