My wife recently brought our BeFree filter back to life by adding a half teaspoon of Sodium Percarbonate to a small glass of warm water and letting the filter sit in it for about 30 minutes. Note that other cleaning options such as swishing, shaking and even using CLR did not work. Also, the filter integrity is still intact as I can’t blow through it.
Any reason not to bring a tiny amount of Sodium Percarbonate on backpacking trips to clear the filter in case it slows to a trickle in the field?
For reference, the Sodium Percarbonate my wife used (see photo below) was purchased at our local wine/beer craft store and is used for cleaning wine/beer bottles and equipment.
