Question:
Product to clean content level sensors in Gray and Black water holding tanks on RV
asked by: Jack M
Expert Reply:
For that we have the Valterra Sensor Cleaner part # V22011.
To use the Valterra Sensor Cleaner part # V22011 on either a gray or black tank you will need to add 8 oz (half the bottle) to an empty tank and then fill tank with water. After 24 hours you can empty the tank at your convenience.
It's recommended to do this once a year.
Valterra Sensor Power Sensor Cleaner - 16 oz Bottle