A novel rectangular hand net (RHN) was developed to manage insect pests in rice seedbeds, overcoming the limitations of traditional round nets, which can damage seedlings and are less effective in catching insects. The RHN features a 50 cm by 20 cm rectangular frame made of 4 mm GI wire, with a 100 cm plastic pipe handle and an 80 cm mosquito net. The net is used by walking rapidly around the seedbed, sweeping to catch harmful insects while releasing beneficial ones back into the field.