Lady beetles eat aphids that destroy cotton plants. Chinese farmers generally kill aphids using chemical insecticides. Long seen as the easiest and most affordable pest control method, insecticides are used on a mass scale worldwide

Excessive use of insecticides by Chinese farmers carries environmental costs as the chemicals infiltrate food, water, and ecosystems.

Insecticide exposure can cause negative health effects on farm workers, consumers, residents, and livestock.
Pesticides can also undermine the profitability of farms.

Insecticide use is expensive and can put farmers on a “pesticide treadmill” where they forgo other solutions. China’s farmers could bolster their long-term bottom line by purchasing less insecticide

To read more... https://www.commodity-port.com/blog/index.php/2018/09/28/swapping-pesticides-for-beetles-could-put-money-in-farmers-pockets/