A simple method for the determination of benzene in the household products containing organic solvents by head space gas chromatography was developed. Two grams of sample was taken in a 100 ml of vial bottle together with 20 ml of ethylene glycol monoethyl ether. The bottle was sealed and incubated for 30 min at 25°C, An aliquot of 0.5 ml of head space gas was analyzed by gas chromatograph equipped with a flame ionization detector. Benzene was also specifically determined by high performance liquid chromatography (HPLC). Microdiffusion method (Conway's method) was adopted as a clean-up procedure. Ten milliliter of ethanol was added to an outer ring and a center portion of the Conway microdiffusion unit. One gram of sample was added to the solvent in the outer ring. The unit was sealed and stood at 30°C for 24 h. After standing, the solution in the center portion is taken in a volumetric flask and made up to 20 ml with ethanol. Ten μl of the solution was injected to HPLC equipped with ultra violet detector. By these methods, 30 commercial products were analyzed. A spot remover contained 26.7% of benzene. 2-3% of benzene was detected in some spot removers and remover for ski wax, but not detected in mildewcide and corrosion inhibitor.