On purchase the warmer needs to be sterilised and recharged before first use and every time you wish to re-use it - see below.
Please sterilise your yoomi bottles and warmers separately as the bottles do not need to be sterilised for as long a period as the warmers.
The warmer can be recharged by placing in a pan of continuously boiling water (or an electronic steam steriliser) for 25 minutes. Please see below for additional instructions.
yoomi has been carefully designed so that it is easy to use, clean and sterilise.