Cleaning out the septic holding tank w/Campa-Chem Naturals

IF your mother is going to be gone for a few days I would go down to the hardware store a buy a bottle of septic tank cleaner. Close the gate valve of the black water holding tank - pour in the septic tank cleaner - fill up the black water tank with water. The septic tank cleaner will dissolve any accumulated crud in the tank (given enough time).