White scale of Lagerstroemia indica

It is a scale insect, which blows cotton scale, and uses (melts) or (kills) 1000 times of pesticide synergist. The scale or cotton scale is a wax shell, and the pesticide synergist is added to increase the adhesion. Once every 5-7 days, twice ok! ! ! ! ! ! ! ! ! Simple, dilute 10 times with vinegar, and wipe it twice with a towel!