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)

Works well great for winterizing.. my local store was out of this product.

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

Highly recommend works incredibly fast even on my pool that I left uncovered during our family emergency my pool got neglected completely and this shock cleaned it right up over night.

Really Nice. Extremely well made. Great product. Great Shipping. Great price.

Haven't received this yet. Takes a long time to get this after ordering

I shock my pool three times and it looks clean

Works great clears and shocks the pool

Amazing!! Our pool turned green when we were out of town. I increased the chlorine to 4ppm and made sure the rest of the chemicals were balanced. Added 2 packets. Brushed the pool and vacuumed. The next morning it was no longer green but still a little cloudy. Added 1 more packet, brushed pool, and vacuumed. the next day it was clear! The chlorine remained 4ppm. Had to rebalance the pH and alkalinity after shocking. 10/10 recommend!!