Fresh Pump X pump oil additive from CPACEX eliminates odors at the source. Add 2 ounces of the additive to 1 gallon of pump oil, mix well and add to the pump. A fresh cherry fragrance will be emitted each time the pump is turned on rather than odors associated with human waste. It is an oil-based formula that will not change the viscosity of the oil. 419/450-6208; www.cpacex.com.