How Effective Are Blueland’s PowerDuo Laundry Tablets?

We developed the PowerDuo Laundry Detergent Tablet to tackle two of your biggest laundry challenges: tough stains and stubborn odors.

But how effective is it on perhaps the most difficult of laundry issues—body grime?

To find out, we partnered with independent third-party laboratories to evaluate PowerDuo’s performance against body grime stains and odors, two of the most common and difficult laundry challenges households face.

The results helped validate what our formulation team set out to achieve: a dual-layer, 100% plastic-free laundry detergent tablet designed to deliver what many conventional detergents can’t. 

Why Body Grime Is So Difficult to Remove?

Some of the toughest laundry problems aren’t always the most visible.

Body grime can be a combination of sweat, body oils, skin cells, deodorant residue, and everyday buildup that accumulates on fabrics over time. It often appears as:

• Sweat stains

• Armpit stains

• Rings around the collar

• Dingy-looking activewear

Because these soils easily become embedded within fabric fibers—especially synthetic workout and performance fibers—they can be particularly difficult to remove, especially in cold water washes.

That’s why body grime became a key factor during our PowerDuo development.

Third-Party Testing Results

To evaluate PowerDuo’s cleaning performance, independent laboratories tested the formula against a range of laundry detergents on body grime stains.

The testing measured Stain Removal Index (SRI), a standard industry metric used to evaluate cleaning performance. Higher scores indicate greater stain removal.

In cold-water body grime testing, PowerDuo achieved the highest stain removal score among the products evaluated.

Cold-Water Body Grime Stain Removal Testing Results (SRI)*

*Additional brands scored below 7.00 SRI. Brand names have been anonymized. Results are based on independent third-party body grime stain removal testing conducted in cold-water wash conditions. Higher SRI scores indicate greater stain removal performance. TDResearch ASTM D4265-14 Laundry Stain Removal Testing, 1/19/26

Across the products tested, PowerDuo delivered the strongest body grime stain removal performance. Because activewear, athletic apparel, and heavily worn fabrics are commonly washed in cold water, strong cold-water performance was an important goal during development.

What Makes PowerDuo Different?

PowerDuo was designed with two distinct layers to lift tough stains and eliminate stubborn odors with a single tablet. 

Its first-of-its-kind dual-layer design combines multiple cleaning technologies that work together throughout the wash cycle.

• Powered by 4 enzymes, the blue layer contains the same patented stain-fighting formula as Blueland’s standard Laundry Detergent Tablet—proven to break down stubborn stains from red sauce and coffee to armpit stains and collar rings. 

• The white layer eliminates odors at the source, from sweat and body grime to smoke and pet smells.

Designed for Real-Life Laundry Challenges

The laundry loads that inspired PowerDuo weren’t laboratory stains. They were real-world challenges with the fabrics you wear, use, and wash every week.

That’s why our formulation team focused on improving performance against body grime, one of the most common sources of stains and odors.

Whether you’re dealing with post-gym activewear, kids’ sports gear, or well-worn everyday laundry, PowerDuo was designed to level up your laundry day. 

Powerful Clean, Thoughtful Formulation

While cleaning performance was our priority, PowerDuo was designed to balance efficacy with thoughtful formulation.

Like our other laundry formulas, PowerDuo is hypoallergenic and made safe for sensitive skin. It’s also EPA Safer Choice Certified, meaning every ingredient has been evaluated against rigorous standards for human health and environmental safety.

PowerDuo Laundry Tablets are also free from phosphates, parabens, bleach, and petroleum-based ingredients. And, as always, formulated 100% plastic-free. 

Because a powerful clean shouldn’t require compromising on the ingredients you bring into your home.

The Bottom Line

Third-party testing demonstrated that PowerDuo delivers exceptional performance against one of laundry’s toughest challenges: body grime.

By combining advanced stain-fighting technology and targeted odor removal into a dual-layer design, PowerDuo was built to help tackle tough stains, stubborn odors, and heavily worn fabrics in a single wash. In other words, consider your worst laundry days handled.