Find the best laundry detergent for your needs with our buying guide and test results.
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I presume this test was for cold water. Pros for cold is cheap and safe for septic systems and the environment.
Not as effective as warm water and I suspect by quite a margin. All the same pros go for warm water (septic; environment) and at minimal extra cost when compared to detergents.
This needs testing!
Maybe, it depends on what you're after.