If you’re referring to the two buttons on a dual-flush toilet, they are not just decorative—they control how much water is used for each flush.
- Small button: Usually a low-volume flush for liquid waste (uses less water).
- Large button: Usually a full flush for solid waste (uses more water).
The idea is to save water by using only the amount needed. A dual-flush toilet can significantly reduce household water use compared with older single-flush toilets.
If the buttons on your toilet do something different (for example, they are side-by-side, labeled differently, or on a special model), the exact function may vary by manufacturer.