clean

Lazy persons dump tank and sensor cleaner.
Also works great for gray water tanks

This is the lazy way to clean dump tanks and sensor problems.
First this system works best if the trailer, motorhome or whatever will
not be used for at least 30 days or more. (non freezing weather only)

After dumping your tanks as best you can do the following:

1. Add 1/3 cup of any septic tank cleaner that's safe for plastic tanks containing an enzyme in the toilet bowl for
      black water and a drain for gray water ( I like Rid-X). Add 1/3 tank of water to either or both tanks.
2. Drive from where you dumped your holding tanks to your storage location. After arriving at your storage
    location finish filling your holding tanks with water.
3. Let water filled tanks sit at least 30 days or longer.
4. After 30 days or more dump and flush the tanks. You should be ready to camp with a super clean tank once
    again. In most cases the sensors will read correctly as they once did.
5. Repeat as needed to keep the tanks clean and the sensors working correctly.