always rinse after each use if your using a 1 gallon table top.
use the manufacturers powder if you have hard lime type scale....they always send you 1 sample jar with each new distilller, if not, buy from waterwise.com; their powder removes cement from your distiller with out doing harm...that is, unless you were ripped off by some tawian manufacturer that used an iron heater core, then they can't be cleaned with out destroying the heater core....avoid most all asian made products, for the usa they only make 100% pure trash producs; probably by design.