This pool shock has kept our pool clear throughout the year. Best one we’ve used.

This is the worst quality shock I have ever bought. I had to use double the quantity to achieve the same level of chlorination. I have been using the the pool brand shock that Sams club sold for few years and had no complaints. Not sure why they decided to replace with their own brand. This is very poor quality product.

I’ve been buying my pool products from Sams for years! Last year was the worst swim season we’ve ever had. We couldn’t swim bc our pool stayed green despite my BEST efforts. We dropped the pool and paid someone to vacuum it 3x and it still kept going green. We doubled the amount of chemical we were putting in and it still didn’t help. It was like the shock was completely ineffective. After reading the other reviews... now I know why!!

Great product!

55%. Should be 70

good product

great response

Good deal

Prompt

Bought this for our jacuzzi. It us chemically identical to the more expensive spa chlorinator. Works exactly as expected