Fresh Lube pump oil additive from Surco Portable Sanitation Products is designed to control and counteract offensive pump exhaust odor generated by septic vacuum pumps. Simply add 4 to 6 ounces per gallon of pump oil and the exhaust smells like cherries. Oil-based fragrance does not change viscosity when mixed prior to adding to reservoir. Odors are neutralized instantly, designed to eliminate customer complaints. It is effective when pumping septic tanks, holding tanks, portable restrooms and grease traps. It is available in gallons, pails and drums. 412-789-8683; www.surco.com.