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Sams Club
Sams Club
Customer reviews for Member's Mark Quick Dissolving Shock 20lb with 10 Test Strips for
Member's Mark Quick Dissolving Shock 20lb with 10 Test Strips
4.6 out of 5 stars
stars1,448 ratings427 reviews
  1. 5 stars81% (1,171)
  2. 4 stars9% (129)
  3. 3 stars3% (49)
  4. 2 stars2% (28)
  5. 1 star5% (71)

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Showing 371-380 of 427 reviews
Dec 25, 2025
JOSEPH
2 out of 5 stars review

Overpriced for the amount received

Overpriced Everywhere else is offered 24 for 79 dollars

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Aug 13, 2018
Dad
5 out of 5 stars review

Verified Purchase

Worked great

Reasonable price for the amount you got

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Mar 8, 2022
john
1 out of 5 stars review

Price last year was $69, now $129

Good product but price doubled

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Feb 10, 2022
Megan
3 out of 5 stars review

The price doubled!

The price went from 69.00 to 129.00!!

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Jun 25, 2020
Laura
1 out of 5 stars review

Verified Purchase

Terrible

Every bag is not sealed. No happy at all. Laura

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May 16, 2024
Mary
5 out of 5 stars review

Verified Purchase

Pool Shock

Have used this for years in our pool. Once a week to keep water sparkling

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Jul 10, 2018
ktfnovi
5 out of 5 stars review

Verified Purchase

Shocked it was so easy

Really made it simple and had what I needed at my doorstep. The convenience is a real benefit.

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Jul 17, 2017
offtrack48
5 out of 5 stars review

Great!!!

I have been using this product from Sam's and have never had a problem!! I don't know what the other reviewer's problems were with the shock, but I can say this shock is not meant to raise the chlorine level per se, it's for maintainance. If your level is low, you need to add granulated chlorine from a bulk bucket, of course its gonna take more to raise the level if you use only bags of shock, it also gonna cost you a fortune. Buy a large bucket of chlorine and whach the difference. Add shock only after a heavy rain or heavy pool use.

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Jul 17, 2020
Jim
5 out of 5 stars review

Works Great!

Not sure I understand all of the negative reviews here. Been using this Shock for 3 years and it works great to augment my salt water pool when things get a little out of balance. my local sam's ran out, used the Clorox brand and had to use twice the amount to get it in balance. And immediately fell back out within 2 days. Found a sam's with stock, used my normal amount. problem solved.

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Jul 23, 2019
leelos
5 out of 5 stars review

2nd year using & no issues

Purchased a 24ft round pool last year with no prior pool experience. I started using this shock after I ran out from the pkg that came with the pool. I’ve had zero issues with this product. Works great and keeps my pool clean and clear. Recommend for sure

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