Mix one part (ex: 1 cup) Calcium, Lime and Rust Remover to eight parts (ex: 8 cups) water (for 10-12 cup automatic drip coffee makers). Run through coffee maker as if making coffee. Dispose of solution once product has run completely through the maker, then fill entire pot with clear, cold water and run a complete cycle twice. Instructions are for a regular 8-12 cup coffee maker. *Do not use Calcium, Lime and Rust Remover in coffee makers that hold water permanently. *Calcium, Lime and Rust Remover is not recommended for Gevalia, Keurig or Cuisinart coffee makers. *Do not use Calcium, Lime and Rust Remover in espresso machines. Always read your coffee maker’s manufacturer’s directions before using Calcium, Lime and Rust to make sure product is compatible. Certain coffee makers contain permanent carbon/charcoal filters. Consumer discretion is always advised.