Bats contribute significantly to soil fertility and nutrient distribution due to their large numbers, high mobility and varied habitats for roosting and foraging. Bat guano (droppings) provides organic input to soil and facilitates nutrient transfer, contributing to soil fertility and agricultural productivity. The practice is harmless vis-a-vis human health.
Several species of bats, in fact, contribute to human health by reducing populations of mosquitoes and other insect vectors that spread malaria, dengue, chikungunya and other diseases. It is reported that a small bat may feed on almost 5,000 mosquitoes each and every feeding night far more than other measures adopted to eliminate them.