In order to get the most out of your automatic espresso machine, you should regularly clean the brew unit. As with home coffee brewers, oils and residue left behind can cause bitter tasting coffee and clog your coffee output. Cafiza Tablets are easy to use – follow your machine guide for specifics on where to insert the tablet on your model. Each 2 gram tablet is sized for use on a wide range of different machines. NSF certified for metal compatibility and safety. Packaged on a convenient blister card with 8 cleanings per carton.