Really good shock. I switched to these and I only have to add 1/2 as often now. 1 a week and it holds the chlorine levels.

Works great 2 bags every Sunday.

Worked really well going by recommended amount. Great deal when on sale otherwise just average price like everyone else.

One pack a week helps my pool maintain water clean

Use this for years. Good price. Effective

This Member's Mark Pool Shock makes our pool look crystal clear. For our pool 2 Packets at a time

Better than Leslie’s over priced shock!

Just as good as the pool supply store, for less!

Works as advertised. Priced fairly. I'll buy it again.

We love this stuff - works better than some top name brands.