Sorry I have to write this. June 2017 = I've had them for over a month and I am disappointed each week with the quality. Plenty of stuff left in both pool and especially jacuzzi. Below average. And I have brand new water (only 3 months old) in my pool and we're already getting green algae in May?! My pool is average size, 10-12,000 gallons. And about 10 years old. Anyways, after a year of using my former pool guy, who left it sparkling after each service, he switched to a helper and couldn't do himself. So I looked at these reviews and went with Golden Bear thinking I'd get a sparkling pool and clean after each visit. But I must add this review for others to know to expect potentially average.