Enzyme cleaners can be effective in removing milk stains and odors. One popular enzyme cleaner for milk is Nature's Miracle Stain and Odor Remover. It contains enzymes that break down organic compounds, such as the proteins in milk, effectively eliminating the odor. Other enzyme cleaners that are often recommended for removing milk stains and odors include Bissell Professional Pet Stain and Odor Remover and Rocco & Roxie Professional Strength Stain and Odor Eliminator. It's important to follow the instructions provided by the manufacturer when using any enzyme cleaner.