Locusts and grasshoppers are major economic pests in China and are controlled by a strategy of preventive management where about 1. 5 million ha are treated each year. The preventive management system aims to keep locusts and grasshoppers at lower densities. so that the dense swarms seen in the past are no longer common and crop and pasture damage minimized. https://balboasurfandsstylers.shop/product-category/bibs/