Kirkland Signature OXI Powder is the ultimate laundry booster and multipurpose stain remover — powered by oxygen to tackle tough stains across your entire home. Use it in the laundry as a booster with your regular detergent for brighter, whiter, cleaner clothes, or use it on its own for carpets, upholstery, pet stains, red wine, appliances, patio furniture, and grout. Chlorine-Free. 328 washloads* (*based on laundry usage instructions). Net weight 4.99 kg (11.0 lb / 176.0 oz). For all machines including HE. Made in the USA. Distributed by Costco Wholesale Corporation, Seattle WA 98124 USA.
Kirkland Signature OXI Powder: One Product, Eight Uses
- Laundry Booster — add to every load for brighter, whiter, cleaner clothes
- Stain Pre-Treater — apply directly to stains before washing for concentrated stain removal
- Carpet Cleaner — dissolve in water and apply to carpet stains, rinse thoroughly
- Upholstery Cleaner — safe for water-washable upholstery and fabrics
- Pet Stain Remover — oxygen-powered formula neutralizes pet stains and odors
- Red Wine Remover — effective on oxidizable stains including wine, coffee, tea
- Patio & Outdoor Furniture — apply solution, let stand, rinse with cool water
- Grout Cleaner — apply paste to grout, let stand 15–30 minutes, scrub and rinse
- Chlorine-Free — safe for colors and fabrics that cannot tolerate chlorine bleach
- For All Machines Including HE — standard and High Efficiency washers
- 328 washloads per box — long-lasting value as a booster
- 4.99 kg (11.0 lb / 176.0 oz) bulk box
How to Use
For top-load washers: add ¼ measuring cup to water with your regular detergent before adding laundry; use more for heavily soiled loads. For front-load or HE washers: dissolve ¼ measuring cup in water first, then add to the drum before laundry — do not add undissolved powder directly to the dispenser. For stain pre-treating: apply solution to the stained area before washing. For carpets: soak up excess liquid first, apply the OXI solution, rub gently, allow to stand 5–30 minutes, blot with a clean cloth, then rinse thoroughly with clean water. For upholstery or hard surfaces: mix one cup per gallon of water, apply to the surface, let stand 15–30 minutes, scrub as needed with a cloth or sponge, then rinse with cool water. Always mix until completely dissolved using the warmest water possible. Do not heat or boil solution. Do not store solution in a sealed container. Keep out of reach of children. Eyes: Rinse immediately. If swallowed, seek medical attention immediately.
About Kirkland Signature OXI Powder
Kirkland Signature OXI Powder is Costco's private label answer to premium oxygen-based stain removers like OxiClean — delivering comparable performance at a fraction of the cost. The oxygen-powered formula uses sodium carbonate peroxide to release active oxygen on contact with water, breaking down stain molecules at the molecular level without the use of chlorine bleach. This makes it safe for colors, fabrics, and surfaces that cannot tolerate chlorine. The multipurpose formula is effective on 8 different surfaces and stain types, making it one of the most versatile cleaning products available. Made in the USA. Distributed by Costco Wholesale Corporation, Seattle WA 98124 USA.
Frequently Asked Questions
How is Kirkland OXI Powder different from regular laundry detergent?
Kirkland Signature OXI Powder is a laundry booster and stain remover, not a standalone laundry detergent. It is designed to be used in addition to your regular detergent to boost cleaning power, brighten whites, and remove tough stains. It can also be used as a standalone stain remover for pre-treating, carpet cleaning, upholstery cleaning, and hard surface cleaning. The oxygen-powered formula is chlorine-free and safe for colors.
Can Kirkland OXI Powder remove pet stains and odors?
Yes. Kirkland Signature OXI Powder is specifically listed for pet stain removal. The oxygen-powered formula breaks down the organic compounds in pet stains at the molecular level, neutralizing both the stain and the odor rather than just masking it. For best results on carpet pet stains, soak up excess liquid first, apply the OXI solution, allow to stand 5–30 minutes, blot with a clean cloth, and rinse thoroughly with clean water.
Is Kirkland OXI Powder the same as OxiClean?
Kirkland Signature OXI Powder and OxiClean use the same active ingredient — sodium carbonate peroxide (sodium percarbonate) — which releases active oxygen on contact with water to break down stains. While the exact formulations differ, both products deliver oxygen-powered stain removal without chlorine bleach. Kirkland Signature OXI Powder is manufactured to Costco's quality standards and offers comparable performance at a significantly lower cost per load.
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I love this stuff. Honestly im not even sure why i use it other than my parents did so i do too. My stuff is clean. Cant argue with results
This is the best stuff in the world.
Good for oil and grease stains
It works great for taking stains out of anything, clothes, rugs, ceramic coated Dutch Ovens, and coffee stains out of stainless steel vacuumed coffee containers. I’ve been using it for ten years.
Best laundry detergent!
The cleaning power of OxiClean is nothing short of magic, and it has been around since 1992! If you haven't used it to rescue a terribly stained item, you need to give it a try. Most impressive is that, when used as directed, OxiClean can remove almost any stain (like coffee, grass, wine, blood) even from white clothing. It is a powder that is easy to use in your washing machine and inexpensive. No need to wait until a calamity occurs for you to test its effectiveness, OxiClean will make all of your white items brighter and your colors more vibrant!
Kind of difficult to get at times. Delivery often gets “delayed”. But, the product itself is great!
Great
Convenient
Best product to remove hard stains, hubby is contractor & get his clothes into crazy things!!! Use with every load...
I use this product on every load that cannot be bleached. It works great.
Very good product and would recommend it to all
GREAT PRODUCT!
Oxyclean is a great booster to our laundry. I use it consistently for its pleasant scent and color retention.
Has just that little extra boost that you sometimes need. Very cost-effective when purchased in this quantity.
Good
Used in every clothes washing, even colors
I love being able to get a large package of this oxiclean. We have many pets and I won’t wash clothes without it. It gets my clothes super clean. Also like to use it to clean my house
Best stuff ever made
It works good
same great product... good for our animal rescue
Excellent product
I use this with every load of laundry. The price per load is better than buying at the big box store. Excellent product.
Oxi clean versatile max efficiency is the only stain fighter I use now. Actually I won't wash a load of my clothes without a scoop of it. It fights almost any/all tough stains, without even having to scrub or soak them, u just add it to the load and boom, stains are lifted. I've even had my roommate put some of my jeans in the dryer without checking if the stains were gone 1st and I thought.... well that's it they are ruined..... but then I washed them the next time with oxi clean and magically the stains were gone..... so amazing!
Use this product with Tide pods, and Shout spray (if needed). Laundry comes out very clean, very bright, and smelling great! Have a top-load washer, which also benefits from my using this in it.
Great price value
Good booster to detergent.
Love it
Great product
I get this every 3 months. Works great. My brights stay bright.. Easy on sensitive skin
Great product good price fast delivery.
Excellent detergent works well