When the internal components of your coffee maker are clean, your coffee brews faster, is less bitter and tastes better. The Cleancaf Coffee Maker Cleaner removes lime scale buildup allowing your automatic coffee maker to brew faster and more efficient. Your coffee will taste better. With regular use, coffee maker should be cleaned once a month. Cleancaf Coffee Maker Cleaner includes three treatments / three month supply. Odorless and non-toxic.