To use naphthalene balls in a sink, according to the provided reference, you simply place them on the sink itself.
Based on the reference detailing how naphthalene balls are used, specifically for sink applications:
- You do not need to pack the sink or place items around the balls as you would with clothing storage.
- The instruction for washroom sink use is direct and straightforward.
Simple Steps for Sink Use
As stated in the reference:
- "To use it in the washroom sink, just place the naphthalene balls on the sink."
This indicates that the method involves setting the naphthalene balls directly onto a surface of the sink. The exact location on the sink (e.g., edge, basin) is not specified in the provided text, but the core action is placement on the sink.