..habe previously for cleaning my faema 61 brewing unit always conventional purification tablets / powder used by burlap and manufacturers, with a satisfactory cleaning effect ... now, with Pully I have a wow - effect experienced; even old residues both in the filter holder and the brewing unit was dissolved without any problems (the portafilter 'flash' now as good as new and my machine is already more than 10 years old and is very often used). after the initial cleaning and the first flush I was curious at first espresso ... much better taste, as well as the cappucci .... strong buy recommendation for me .... Application: 1 x per week, clean after the first espresso verwerfen..ich hope it helps you