During the 1990s, FAO took a leading role in the promotion of integrated pest management for rice production in Asia. Hundreds of thousands of farmers were trained using an approach known as the Farmer Field School (FFS). Like many of the programmes managed by FAO, the funds for Farmer Field Schools came from bilateral Trust Funds, with Australia, Netherlands, Norway and Switzerland acting as the leading donors. FAO's efforts in this area have drawn praise from NGOs that have otherwise criticized much of the work of the organization.