Our coffee machine cleaning effervescent tablets contain sodium bicarbonate and citric acid. It can be strong cleaning, can deep clean the coffee machine, thoroughly clean coffee grounds, coffee oil and other dirt. Its use method is very simple: 1. Please clean the filter basket and filter net before use, and put the product on it; 2. Add the appropriate amount of water, turn on the coffee machine to clean. Deep clean the inside of the coffee machine to effectively remove grease and coffee stains. Safe ingredients to reduce environmental impact.