A dirty line may be the reason your floating line isn’t floating the way it used to. Here are a few simple steps to ensure that you get the most out of your line.  Also included are suggested treatments for your line:
EVERY TIME YOU FISH
Avoid getting your line dirty.  Sometimes it’s unavoidable that a line gets dirty, but you’d be smart to limit your line’s exposure to dirt and grime.  This may seem obvious, but the effects of dirt and dust are significant on a line’s performance.
Treatment: Stream Line is a lubricant that will improve casting distance and accuracy.  It reduces drag created by guides and allows line to shoot like lightning.
EVERY 2-3 TIMES YOU FISH
Clean your line. Running the frequently used section of your line through a line cleaning tool will get rid of a lot of the dirt on your line.
Treatment: Scandinavian Fly Line Cleaner is a great way to improve floatation, casting distance, and accuracy. It can be applied to your Line Cleaning Tool and then wiped onto your line, then fished immediately (no dry time is required).
EVERY 5-10 TIMES YOU FISH
Use soapy water to clean your line.  This will remove a lot of the smaller dust that your line cleaning tool is missing.
Treatment: Line Speed is hands-down the best line treatment available.  It not only improves performance but increases the life-span of a line.  The best practice is to clean a line, apply Line Speed and allow it to sit 24 hours, then buff the line clean the following day.