Regular cleaning: The use of descaling tablets is important to remove mineral deposits accumulated in the machine.It can proper and maintain consistent grinder performance. Better coffee tasting: Descaling tablets can a lot of money to provide better tasting espresso coffee and help extend the life of the grinder. Prevent flavor transfer: When switching between regular, decaffeinated and flavored coffee beans, it is perfect for preventing flavor transfer. time to use: Descaling / decalcification is usually performed according to the instructions of each manufacturer, usually once a month.Clean 2 tablets at a time. Scope of application: coffee machines, electric kettles, water dispensers, humidifiers, disinfection cabinets, tea cups, egg steamers and other where dirt needs to be removed. colour:White Material:Effervescent tablets size:15x15x7mm Package Contents: 100 * effervescent tablets Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.