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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 21-30 of 184 reviews
Jun 11, 2025
Swimmer
5 out of 5 stars review

Verified Purchase

Chlorine on sale

Thanks for putting this product on sale. Chlorine tablets have beeen extremely expensive in the past 4 years. It was nice to have a sale on this product.

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Mar 31, 2023
Jules
5 out of 5 stars review

Verified Purchase

3" tablets

Shopping around I found this chlorine to be the cheapest. It does the job of keeping the pool water clear and algea grouth under control. Will buy it again. I don't need the individual wrapped tablets.

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Aug 12, 2022
Monger
4 out of 5 stars review

Verified Purchase

Excellent Value

Best value in stores or online. Only problem was this time, several packs were linked together and several tablets where chipped or crumbling. Does not effect the overall use, but messy, no one wants chlorine dust on their clothes.

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May 3, 2022
Mims
5 out of 5 stars review

Verified Purchase

My favorite chlorine tablets!

Have used this for last four years and love that the chlorine tablets are individually wrapped, easy to open each package, and seems to last pretty well in the chlorinator.

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May 7, 2022
Texazboy
5 out of 5 stars review

Verified Purchase

Better price than most other places and...

Chlorine is still outrageously expensive, but Sams is cheaper than most. The 3" tablets are now individually wrapped which is nice... helps keep them fresh I suppose.

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Aug 30, 2024
Dan T
4 out of 5 stars review

Verified Purchase

Chlorine tabs and ordering on online.

Have brought tablets in the past and reorder them. The product works well. I normal buy them at the local Sam's club, but this time I order them online. Well, when they were delivered (I both 2 of them) the boxes were torn and opened around the edges and the bucket was open. Tabs were loose in the box. In summary the product is really great but ordering this item online not so great.

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Feb 25, 2023
Ruth61
5 out of 5 stars review

Verified Purchase

Chlorine Pool Tablets!

I have been using these tablets for our pool for years. Last year I couldn’t get them and got another brand. I had nothing but problems with the pool. I purchased the members Mark brand as soon as I saw they were available! I’ll update everyone once the pool opens up. I’m confident that it was the other brand that wasn’t good! Looking forward to a great summer with a crystal clear pool!!!

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Aug 31, 2024
MommaTex
5 out of 5 stars review

Verified Purchase

Great value

we buy these every single year for our swimming pool. Best value around, I have price shopped everywhere and no one can beat Sam’s Club especially when it goes on sale. I’ve tried another competitors tablets and for some reason they’re just not as effective either. Highly recommend this brand.

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Jul 17, 2025
Jeff
3 out of 5 stars review

Verified Purchase

Great price, inconsistent quality

chlorine after all is a commodity.. really good price, seems to work like all the others yet. one big problem with this.. half of the tablets were crumbling. we fell apart when I took them out of the bag.. I could be wrong but I really have a feeling they were sitting in the warehouse for quite a while. they seem to work just as good, just really old..

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Aug 15, 2023
WillL
1 out of 5 stars review

Verified Purchase

Not worth it!

Another excellent example of Sam's Club pricing that diminishes the cost of membership. Price is exactly the same at other pool supply outlets. Most pool company technicians do not like the individually wrapped tablets so I had to return for a refund.

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