The Workmate vacuum septic service truck from FMI Truck Sales & Service is available in steel, stainless steel or aluminum, in capacities from 2,200 to 4,000 gallons. They are available in single- or two-compartment tanks, with a jetter system and choice of rotary vane vacuum pump or blower. Units can be built on a variety of chassis options. 800/927-8750; www.fmitrucks.com.