So I religiously clean my Keur8g every 3 months and change my filter every 2 months like clockwork.  My husband drinks tea all the time, and my daughters love hot cocoa. I am a coffee addict ( MULTIPLE 18+  oz mugs daily!! LOL) the only way to keep the flavors separate is by using these little nuggets of amazing cleanness!!! There is nothing worse that a horrible tasting cup of coffee!!!!