1. Spray and completely cover the cassette, derailleur pulleys, and chainrings with Drive Train Cleaner Plus.
2. Thoroughly clean the components with the brush.
3. Clean thoroughly between the cassette cogs once with the Drive Train Cleaning Rope.
4. Rinse with clear water.

Sometimes, this process needs to be repeated if there's a lot of dirt. Drive Train Cleaner Plus is very economical, so multiple applications should be easily manageable.