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)

Shock is as advertised. However, did not arrive in original box - just six packets bagged together. That being said, as this particular product has become impossible to find elsewhere, I'm happy with it!

We have a huge pool and this works very well. We will continue to buy it

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.

Love the Clorox brand and the fact that it can be delivered overnight! I noticed my pool stayed getting algae as the Arizona sun is starting to creep up and I haven’t shocked my pool in months. Ordered this on prime , got it the next morning and am watching the green go away! I am glad I didn’t have to drive to a pool supply store today. Simply cut open a bag, pour on your pool and then run the pump to allow it to filter and do its job.

works well but should cost less

This stuff is great. I use 1 package a week and run my filter for 4 hours a day, once i started back flushing my pump for 20 seconds every week I have beautifully clear water all summer. No need for anything else. And I've swam right after using this with no issues. For reference my pool is small only 18ft

Worked really well clearing up my inground pool!

Clears up a runaway pool in a few hours