Abstract: A mosquito repellent solution to prevent mosquito bite, comprising 0.1-9.9% organic acid of total weight as active principle, 88-99.6% water as solvent. The organic acid is single acid or mixed composition out of ethyl butyrate, propionic acid, n-butyric acid, isobutyric acid, isobutyric, valeric acid, hexanoic acid, n-Heptanoic acid, L-Lactic Acid and malic acid. The composition solution to prevent mosquito bite disturb mosquitoes' olfactory sensation through imitating human's smell of skin and breath; all raw materials base on the standard of food grade, so the composition is safe to human beings, particularly to infant, pregnant women, children and the old who are weaker. The composition solution does not work by killing mosquitoes so it would not relate to resistance and ecology risk. The preparation method is simple with low costs; there is no three wastes and friendly to the environment.

Abstract: A pesticide composition solution is provided. The pesticide composition includes an effective amount of active ingredient according to the formula I and a pesticide adjuvant, Wherein: R1 is Na or K, and R2 is H or OH. The pesticide composition solution in this invention can be processed using simple methods, does not require the use of organic solvents, can reduce environmental pollution, and will greatly lower pesticide production costs. In addition to the good pest control effect of the pesticide composition solution, the potassium salt contained in the solution can provide nutrients to crops, and promote plant growth. This pesticide composition solution is safe and reliable in use.