Clorox® Pool&Spa™ Shock Plus, for Crystal Clear Swimming Pool Water, Swim-ready in 15 minutes, Suitable for vinyl pools 12 Count (Pack of 1)

This kept my pool sparkling clean. Never worried about algae, especially with full sun and 100 degree Temps for the last 8 weeks ! Great stuff. Will continue to buy this product.

Great price. Works as expected.

This is easy to use and is effective. We throw in a couple bags if we have consistently high temps for several days or have a get together where there are lots of people in the pool. It dissolves quickly (so I'm confident it isn't just getting sucked into the filter before it can work). Keeps our pool looking great.

Works well I like you can use pool sooner than others I never go in 15 minutes usually 2 hrs which is faster than others. Be sure to test water

this shock/clorinator works great, good value- i just went to re-order, the price has gone up $10 in 10 months [20%] wtf?

There is not a better pool shock on the Market! I'm not a chemist, so I can't go into detail on why this shock works so well. But I can tell you from my experience with 33 years of owning a pool. I have not found anything that works as good as this Clorox extra blue pool shock does. 1 packet a week in my 16000 gallon pool and my water is crystal clear! No algae problems at all! Doesn't sting your eyes and you can be swimming again in less then 20 minutes. You can't go wrong with any of Clorox extra blue products!

Works great

They work like they are supposed to. Like all chemicals they have a strong odor so if you are sensitive like I am with asthma I suggest you wear a mask or protective gear when using.