The Entity Chain Scrubber DG45 offers the best and quickest way to clean your chain, improving shifting performance and increasing the lifespan of your drivetrain. Directions of use: Slide the handle off, push the lid backward and lift it to open. Use chain cleaner fluid to fill the container to the FILL mark. Slide the chain into the grover and close the Chain Scrubber unit. Hold the Chain Scrubber with your left hand whilst using your right hand to spin the pedals backwards a few times until you are satisfied with the chain cleanliness. Open the unit carefully to avoid spilling the contents and remove from the chain. Rinse the chain cleaner fuild from the chain with clean water and wipe the excess with a clean rag. Apply lube to the chain.