Chemical pesticides have turned out to be another man-made disaster, as its effect on humans and the environment has been found to be as deadly as on pests.
So some farmers in China, Japan, France, and other countries looked back on the traditional way of controlling pests and found using ducks, to be the most effective way. This method of integrated farming, i.e. ‘rice-duck farming’ has been documented 600 years ago.
Apart from eating the pests, the wading or waddling of the ducks through the mud oxygenates water and stirs up layers of soil. Their droppings act as a natural fertilizer. All these benefits make these ducks a viable alternative to pesticides!
Source: Eco Friend