The Trigger is fast and EASY TO USE: just open the package, and you’re ready to go. Place The Trigger over the chain, and close the lid of the chain cleaner with your trigger (index) finger. Spray Clean Streak through the chain cleaner and onto the chain while backpedaling for 3 chain revolutions. Stop spraying, but continue to turn the crank for several more rotations. You’ll have a clean chain in under 20 seconds!