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There's an entire follow-up video to this that points to errors in his original video: https://www.youtube.com/watch?v=Ll6-eGDpimU&t=2223s

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None that go against the thesis- though there's a lot of additional information that's pretty interesting.

That's incorrect -

1. He points out that a powder Detergent by itself is less effective than a combination of powder and gel. Something that the pods provide built in.

2. His own experiment with the prewash were completely underwhelming, showing nearly identical results in addition to not proving any different in the final result.

I couldn't find where he says the powder alone is worse than powder and gel. There is a section discussing how any gel detergent will have at most one out of enzymes and bleach- is that what you're thinking of? The actual test you refer to happened in the first video. I don't think it's too surprising. Dishwashers work pretty well!

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