PURPOSE: To titled insecticide composition having safety free from defects such as smell, stimulation, etc., containing a compound such as 1-1-di-3,4-xylylethane, etc. as a solvent for the insecticide.

CONSTITUTION: A compound shown by the formula (X is Y are lower alkyl, or α-methylbenzyl; m and n are 1W3) as a solvent is added to an insecticide such as an organic phosphorus type, etc. 1-(3-Methylphenyl)-1-xylylethane, 1-1-di-3, 4-xylylethane, 1-xylyl-1-(3-α-methylbenzylphenyl)ethane, etc. may be cited as the compound shown by the formula. For example, 0-(2,2-dichlorovinyl)0,0-dimetyl-phosphate, etc. may be cited as the insecticial component. Both oil and emulsion are used as the form of the preparation of the insecticide, and the solvent is used individually or in combination with a solvent such as xylol, etc.