What kind of water does it use?

The Polti Cimex Eradicator was designed to function with normal medium-hardness tap water between 8° and 20°f. If the tap water contains a lot of calcium carbonate, use a mix composed of 50% tap water and 50% widely-available demineralised water. Do not use pure demineralised water. For information about water hardness, please contact your local municipality.