Superior cleaner and rust inhibitor for use with all fishing tackle. Use Penn Cleaner & Corrosion inhibitor to remove build-up on all internal parts of your reel while doing scheduled preventive maintenance. Refer to your owner's manual. Spray on all type of rods, reels and lines then lightly wipe down after returning from your trip to help prevent moisture and salt build-up that can be a major cause of corrosion. Penn Cleaner & Corrosion Inhibitor on most equipment. Use Penn Cleaner & Corrosion Inhibitor on most Marine equipment including: motors, downriggers, winches, pulleys trailers and anything that might rust due to exposure to everyday environmental/weather conditions.