If it's hard to fight the hangnail bug (i.e., the little cabbage moth) over there, I recommend you try a few formulas, you can use mevinphos + indoxacarb, or carbofuran + deltamethrin, or ethyl polymyxin + methoxyfenozide, or zeta-chlorpyrifos + chlorpyrifos, or zeta-chlorpyrifos + mevin. The spray control of lice cypermethrin and other drugs, adding silicone additives together, the control effect is better.