There is coffee oil residue in the coffee machine after every cup of coffee prepared, which is extremely difficult to clean if you are not using specific maintenance products. Not maintaining the coffee machine regularly can not only affect the taste of beverages, but impact the overall coffee machine performance as well. These cleaning capsules are made for Nespresso® coffee machines and ensure impeccable cleanliness by eliminating all the dirt accumulated inside the coffee machine.It is recommended to use one cleaning capsule after every 30 cups of coffee made, or at least once a month. If you are using these cleaning capsules on your machine for the first time, we recommend to use 2 capsules, one after another.These cleaning capsules are compatible with Nespresso® coffee machines:- Le Cube®- Essenza®- K-mix®- Krups®- Delonghi Latissima®- Delonghi Latissima Touch®- Delonghi Latissima Pro®- Pixie®- U®- U Milk®- Inissia®- Maestria®- Grand Maestria®Cleaning capsules are unsuitable for use with the Nespresso® machines which have "Vertuoline" capsular system.