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Customer reviews for Member's Mark 99% Pure Chlorine Tablets, 40 lbs for
Member's Mark 99% Pure Chlorine Tablets, 40 lbs
4.2 out of 5 stars
stars
190 ratings184 reviews
  1. 5 stars67% (128)
  2. 4 stars12% (23)
  3. 3 stars5% (10)
  4. 2 stars4% (8)
  5. 1 star11% (21)

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Showing 1-10 of 184 reviews
Jul 16, 2022
Reviewer name: pawzz
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

We like being able to buy the big bucket

This is Barnie. He holds our chlorine tablets and floats around to keep our pool clean. Currently Barnie is very hungry. As you can see he is floating. He will be fed 3 chlorine tablets today. All joking aside, we like buying the large bucket. It lasts, and is very convenient. The Sam's club brand works just as well as the name brand

Helpful?47T4CNMEK8W913627871096
Mar 19, 2026
Reviewer name: Jilei
5 out of 5 stars
5 out of 5 stars review

Good thing for pure pool

A truly excellent shopping experience—the logistics were smooth, and I am very satisfied with the product. We have been using these chlorine tablets consistently; they are highly effective at keeping our pool water crystal clear. Highly recommended!

Helpful?47T4CNMEK8W913627871096
Aug 4, 2025
Reviewer name: Chlorine review
5 out of 5 stars
5 out of 5 stars review

Great Product! Great Price!!

I purchased this last week and it was delivered the next day. The tabs were individually wrapped. None of them are broken like other ones that I have bought from Leslie‘s. It is 99% chlorine! Better and less expensive to buy them from Sam’s Very Impressed!!!

Helpful?47T4CNMEK8W913627871096
Jul 27, 2023
Reviewer name: angieb
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great tablets for a good price.

I've used these tablets in my in-ground pool for several years and they work great! They are also the cheapest I've found chlorine tabs in the past couple of years.

Helpful?47T4CNMEK8W913627871096
Sep 29, 2025
Reviewer name: Jeff
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Great bargain on chlorine tablets

Had bought the chlorine tablets earlier and was shopping again and saw the price dropped. So, I went back to get the difference. When I actually returned it, the price had dropped even more. Ended up paying 1/2 of original price. Always great full a d that's why I shop at Sam's

Helpful?47T4CNMEK8W913627871096
Sep 27, 2023
Reviewer name: Al from Cali
5 out of 5 stars
5 out of 5 stars review

Verified Purchase

Member's Mark Chlorinating Tablet 40 Lbs)

This is the first purchase I have made of these Tabs, You can't beat the price ,and forty lbs of tabs is really super saving money. I have only used them for about 3 weeks, but they are working great if not better the Tabs I have purchased thru other stores.

Helpful?47T4CNMEK8W913627871096
Aug 4, 2025
Reviewer name: Bb
4 out of 5 stars
4 out of 5 stars review

Verified Purchase

Love a Good Bargain… Hate the Chlorine Smoke Bombs

No complaints about how these tablets perform—my pool stays clear, and the price is solid. But the last couple of buckets have been a whole different experience. So many broken tablets, and every time I open one of those individually wrapped “gifts,” I get a face full of chlorine powder. I’ve literally had to start wearing a mask just to open them. Not exactly what I expected from a bucket of pool supplies. Still worth it for the results, but seriously… can we get less of the airborne drama?

Helpful?47T4CNMEK8W913627871096
Apr 11, 2025
Reviewer name: Soupi
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

Smaller price comes with a smaller size

The chlorine tablets are a quality product, however, customers should note that although the price has come down, so has the size. What used to be a 50lb bucket of chlorine tablets is now 40lbs.

Helpful?47T4CNMEK8W913627871096
Aug 28, 2025
Reviewer name: Dee
3 out of 5 stars
3 out of 5 stars review

Verified Purchase

A little disappointed

Most of the plastic wrapping on the Individual tablets was torn off and several tablets were busted I was a little disappointed because these tablets were not cheap

Helpful?47T4CNMEK8W913627871096
Jun 25, 2026
Reviewer name: Carlos
1 out of 5 stars
1 out of 5 stars review

Please don’t use

I drain my pool 2 months ago because of high cyanuric acid. I noticed the pool was still getting algae so I went to do a test at Leslie’s pool and they informed me that cyanuric acid was too high again. So I did a little research and found out that it was this shock that I been using. This is the worse shock I ever used. Never again!! I have to drain my pool again because of this!

Helpful?47T4CNMEK8W913627871096