I have no idea about Zaino but if two no brainer applications of BFWD (second at 4 months) lasts 8 months and 1 many step application Zaino lasted 6 months then I think BFWD wins the durability and ease of use.
I think you need to factor in the steps since a 2 step process is 2x more than a 1 step so when you do the step should not matter (at the beginning, middle, or end).
Al
Made in USA
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