Guano covering the floor of cave sheltering huge colonies of certain species (Tadarida plicata or Taphozous for example in Thailand) is exploited for its fertilizing values. Constituting a powerful fertilizer, because they contain a high content of nitrogen in various forms (ammoniaques, nitrites, nitrates), droppings of bats are often harvested and packaged before being sold wholesale or retail for fertilization of vegetable crops and ornamental. Another advantage of this natural fertilizer is that it contains many bacteria from the gut for some bats and one of whose remarkable properties is to produce an enzyme having the ability to degrade chitin, basic component of the exoskeleton of insects. These chitinases give the guano insecticidal and nematicidal natural interest to farmers.
Guano kufunika sakafu ya pango kuwaficha makoloni mkubwa wa baadhi ya aina (Tadarida plicata au Taphozous kwa mfano katika Thailand) ni vibaya kwa maadili yake fertilizing . Kuunda mbolea nguvu, kwa sababu wao vyenye maudhui ya juu ya nitrojeni katika aina mbalimbali (ammoniaques, nitriti, nitrati), kinyesi cha popo mara nyingi huvunwa na vifurushi kabla ya kuuzwa jumla au reja reja kwa ajili ya mbolea ya mazao ya mboga mboga na mapambo . Faida nyingine ya mbolea hii ya asili ni kwamba ina bakteria wengi kutoka gut kwa baadhi ya popo na mmoja wa ajabu ambao mali ni kuzalisha enzyme kuwa na uwezo wa kuharibu chitin, msingi sehemu ya exoskeleton ya wadudu . Haya chitinases kutoa guano wadudu na nematicidal asili maslahi kwa wakulima . matumizi ya mbolea hii ya asili ni kazi ya koloni la kawaida na upatikanaji wa pango; baadhi ya maeneo ya kutokea kwa mwaka mzima na ni kazi katika viwanda nusu kuajiri watu kadhaa (la grotte à Tadarida plicata Ratchaburi ni kesi nchini Thailand).