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KatManDude 20.7K Views
May 14, 2026 3:09 PM

Costco Members: 26.5-lb Nellie's Laundry Soda (800 Loads)

$70

$90

22% off
+ Free S&Hat Costco Wholesale
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Deal Details
Costco Wholesale has for their Members: 26.5-lb Nellie's Laundry Soda (800 Loads) on sale for $69.99. Shipping is free.

Thanks to Community Member KatManDude for sharing this deal.

Details:
  • Nellie's Laundry Soda is safe for HE and standard washing machines and our products are phosphate free, fragrance free, hypoallergenic and septic safe.
  • How To Use: Use one tablespoon of Nellie's Laundry Soda for each regular sized load. Wash according to instructions on garments. Always test on garments that may bleed or fade.
  • Ingredients: Sodium Carbonate, Linear Alcohol Ethoxylate, Sodium Chloride, Sodium Metasilicate

Editor's Notes

Written by citan359 | Staff
  • At the time of this posting, our research indicates that this is $40 lower than the next best comparable online prices starting from $109.99.
  • Rated 4.8 out of 5 stars from customer reviews.
  • $20 manufacturer's savings is valid 5/1/26 through 5/31/26. While supplies last. Limit 5 per member.

Original Post

Written by KatManDude
Community Notes
About the Poster
Deal Details
Community Notes
About the Poster
Costco Wholesale has for their Members: 26.5-lb Nellie's Laundry Soda (800 Loads) on sale for $69.99. Shipping is free.

Thanks to Community Member KatManDude for sharing this deal.

Details:
  • Nellie's Laundry Soda is safe for HE and standard washing machines and our products are phosphate free, fragrance free, hypoallergenic and septic safe.
  • How To Use: Use one tablespoon of Nellie's Laundry Soda for each regular sized load. Wash according to instructions on garments. Always test on garments that may bleed or fade.
  • Ingredients: Sodium Carbonate, Linear Alcohol Ethoxylate, Sodium Chloride, Sodium Metasilicate

Editor's Notes

Written by citan359 | Staff
  • At the time of this posting, our research indicates that this is $40 lower than the next best comparable online prices starting from $109.99.
  • Rated 4.8 out of 5 stars from customer reviews.
  • $20 manufacturer's savings is valid 5/1/26 through 5/31/26. While supplies last. Limit 5 per member.

Original Post

Written by KatManDude

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Community Reviews

Nellie's Laundry Soda is a fragrance-free powder detergent that works well for regular laundry, especially sweat, odors, and everyday dirt, and it leaves no soapy residue or machine buildup. The 800-load tub can last years, with reports ranging from about two to three years for a normal household to much longer at lighter use. It is also septic-safe and less wasteful than liquid detergent. The main drawback is that it can struggle with heavy grease, stains, and cold washes, so pre-treating or adding OxiClean helps. It is a strong fit for routine washing when scent-free cleaning matters most.

  • Households washing everyday clothes, because it cleans regular dirt well and leaves no soapy residue.

  • People who want an unscented powder for towels and blankets, because it removes odors without leaving a detectable scent.

  • Families doing routine laundry over years, because one tub can last two to three years with normal use.

  • Shoppers using cold-water cycles, because it works fine in cold washes.

  • People washing heavily soiled work clothes, because it can struggle with heavy grease, sweat, oil, and food stains.

  • Laundry loads that need strong stain removal, because it lacks enzymes and may not clean very dirty clothes well.

  • People expecting a detergent that dissolves easily in every machine, because powdered detergent can leave white residue if it is not pre-dissolved.

  • Shoppers who want a built-in stain booster, because it is a replacement detergent rather than an additive.

Common Questions (5)

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62 Comments

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May 25, 2026 6:02 AM
36 Comments
Joined Aug 2023
YeFreshmakerMay 25, 2026 6:02 AM
36 Comments
Washing soda (sodium carbonate which is what this stuff basically is) is cheaper at Walmart, $5.38 for a 55oz box. So for the 26.5lb that this "deal" is for, it would cost $41.47
Aug 29, 2026 5:43 PM
144 Comments
Joined Aug 2013
SeekingDealsLikeYouAug 29, 2026 5:43 PM
144 Comments
This tub lasts a normal household forever, easily two to three years. It's true that it can struggle with really heavy grease or stains, so you might want to add some Oxiclean to those loads. But for regular laundry, it cleans great and won't leave any buildup in your machine.

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