For porta-potties as well as camper, RV, trailer and boat holding tanks.
RV/Boat/Trailer Holding Tanks – 1 mL per litre of holding tank capacity (eg. 100 mL for a 100 L tank). Apply in empty tank with 5 – 10L of water depending on tank size. Latrines/ Outdoor Toilets/ Vault Privies – When tank is empty, fill ¼ full with water and add 250 mL of product. Maintain with an additional 125 mL of product weekly.