A product must be compatible with the unit and used within its instructions. Stronger dosing is not automatically safer or more effective.
What the observation means
The toilet bowl, pump seals and connected parts may have different material limits. Mixing products can create hazards unrelated to the original drainage concern.
A useful next step
Check the macerator and product guidance before use. Retain the label if an unsuitable amount was added, stop operation where advice requires it and seek help. Do not attempt to neutralise an unknown chemical by adding another household cleaner.
Manuals and supporting guidance
Model-specific instructions take priority. These references support the practical principles discussed here; they do not diagnose your appliance.