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.
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.