"Though it is hard to say to what degree these green detergents are better for the environment than regular detergents," the book emphasizes, "it is still worth buying them because they force those manufacturing detergents to find ingredients that do not harm the environment."
但書中強調：「雖然要說出綠色洗衣粉對環境的汙染，比普通洗衣粉少到什麼程度，可能很困難。但是這類洗衣粉還是值得大家購買，因為它們可以迫使所有洗衣粉的製造者，尋找比較有益於環境的洗衣粉成份。」