Nespresso machine cleaning solution is a liquid that is placed in the water tank with water (each machine's method of setting may vary when placing it in cleaning mode), and it removes deposits or coffee residues inside the machine's pathways, restoring the coffee taste as good as new. The package contains two sachets, one for each use, and it is recommended to use once every six months or once a year (every 6 months is preferred). The solution works on all types of Nespresso machines. Delivery within 1-2 business days.