Urnex has a special formula to remove coffee oils and mineral deposits from brewers and vessels. The best way to see if your thermos needs cleaning is to use hot water, let it cool, then see if there is a taint of coffee or an off flavor. If so, you probably need some cleaning, even if there is no visible residue.

We use this to clean the KBTS coffee brewer at least every other week - before it starts to taste funky. For brewers, you can run a brew cycle with a TABZ™ tablet in the basket and simultaneously clean both the brew basket and carafe. You can clean the inside of additional servers (mugs, thermos bottles, carafes, airports, etc) with one TABZ™ per 64 oz (2L) hot water. Solution can also be used to wipe spray heads.

Small Jar - contains 30 1.5  gram tablet.

It contains a blue dye to insure proper rinsing after cleaning. The date on top of the jar is the date the jar left the factory, not an expiration date. Urnex states that Tabs will last for years if stored properly. Urnex also recommends to use TABZ™ on non-aluminum surfaces as alkaline detergents such as theirs are not generally compatible with aluminum.