This includes new and used for sale listings of Septic/Sanitation Vac Trucks and Toilet Trucks used to removed waste. DOT 407/412 Straight/Combo-Wash Vacuum trucks, Dryvac used in environmental clean up and or mining/oilfield applications. Combination or “Combo” Flusher Hydro Vacuum Trucks used in municipalities maintaining sewage systems. Hydro Excavators or Hydrovac trucks provide the safest method for digging or daylighting around gas, water, electrical lines used in construction or utility applications. Suction Excavation Equipment Trucks are used for the same type of applications as Hydrovacs but use pressurized air instead of water reducing the environmental impact of disposing slurry.