A 3-in-1 sanitizer, algaecide and shock, Member’s Mark® Chlorinating Granules help keep your pool in swimming shape! It reduces pH and eliminates chloring odor–without fillers. These granules also kill bacteria and control algae, so you can make the most of enjoying the season–and your pool.

Policies & plans


  • Member’s Mark® Chlorinating Granules
  • 50 lbs. pail
  • Reduces pH
  • Not blended (no fillers)
  • Eliminates chlorine odor
  • Step 2: chlorinate
  • Kills bacteria & controls algae
  • 3-in-1 sanitizer, algaecide and shock
  • Pail Dimensions: 19.629″H x 13.233″W x 13.233″D

100% Money Back Guarantee: We would like to hear from you with any comments or suggestions. In the continental U.S. or Canada, you can call us toll-free at 1.888.301.0332 from 8 a.m. to 5 p.m. CST Monday-Friday. You can also send us an email using the feedback icon at samsclub.com.


This product is covered by the Sam’s Club Member Satisfaction Guarantee.

Assembled Country


Component Country


Shipping Info

Standard – 2 to 6 business days


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