Well from what I know through my chemistry experience, complete full combustion throughout an entire fuel source is all but impossible short of spraying pressurized pure oxygen onto the flames. Even then, I sincerely doubt that complete full combustion would occur.

In conclusion, I love to know exactly what their "lab test" comprised of.
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“Hiking is just walking where it’s okay to pee. Sometimes old people hike by mistake.” — Demitri Martin