In the latter half of the 19th century, guano became a highly successful export product for Peru, until it was replaced in the world market by chemical fertilizers.
19. gadsimta otrajā pusē gvano kļuva par preci, ko Peru izdevīgi eksportēja, bet tad šo mēslošanas līdzekli pasaules tirgū nomainīja minerālmēsli.