The MCI-2061 Cleaner/Degreaser from Cortec combines cleaning chemistry with microorganisms capable of biodegrading a wide range of hydrocarbons that stain concrete and other hard surfaces, including gasoline, diesel, crude oil, and more. Application of the cleaner involves diluting in water at a 1:10 ratio and spraying or pouring over soiled surfaces. It is available in 1-, 5-, and 55- gallon amounts, and has a shelf life of 2 years.