Alcohol solutions must contain at least at least 70% alcohol to work effectively. If you mix with bleach or rubbing alcohol it should NOT contain the alcohol because it is poisonous. You'll want to wash the surface first and then spray the alcohol solution onto the surface and let it air dry for at least 30 seconds. Don't mix rubbing alcohol with chlorine. This will cause the chemical reaction to be toxic. It should not be used in cocktails and other alcoholic drinks as advised by the company. When looking for a disinfectant, look out for the following ingredients: sodium hypochlorite, ethanol oak-fir oil hydrogen peroxide citric acid, and quat. For efficacy, it is important to find out the specific virus or bacterium that needs killing.