The microwave steam steriliser destroys potentially harmful bacteria by the sterilising action of steam – produced when water is heated to boiling point. No special cleaning agents required, and it doubles as a sterilisation container to be used with cold water and sterilising solution when no electricity is available. It fits both wide-neck or standard-neck bottles with volumes of 125ml, 150ml, 250ml, 275ml and 300ml, from all brands. You can sterilise up to six bottles at a time, and it comes with tongs for the safe removal of hot items from the unit.