Intervals vary
A provider can help interpret household size, tank capacity and prior service history. Do not wait for a backup as the maintenance reminder.
Make access easier
Clearly located lids and properly installed risers may reduce repeated digging, but alterations should be evaluated and completed appropriately.
Watch water and solids
Leaks, unusually heavy water use, and materials that do not break down can add stress. Follow system-specific professional guidance instead of relying on additives as a substitute for service.