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Check which mode you used. The 165 Hz water tone does very little for dust, and the 8–16 kHz dust sweep does very little for water. Sudden muffling after liquid means water; gradual decline over months means dust. If both have failed across several attempts on different days, the cause is mechanical and no acoustic tool will reach it.

The tool is not device-specific — it plays through whatever speaker your browser is routed to, so it already works on your device. The device pages exist for guidance that differs by manufacturer, not because the audio differs. Tell us which device is missing and what is different about it.

Device specifications come from Apple and manufacturer documentation, IP ratings from IEC 60529, and tool specifications from the audio engine itself. Each page lists its sources at the foot. If something looks wrong, send it over and we will check it.

Include your browser and version, your device, and what happened. Audio bugs are usually browser-specific, so "no sound on Safari 18 on an iPhone 14" is actionable where "it does not work" is not. A screenshot of the browser console helps if you know how to open it, though it is not required. Most audio issues turn out to be a permission prompt or an output device rather than the tool.

Within 24 hours on working days. Including your device model and whether the problem started suddenly or gradually usually lets us answer in one message rather than three. Messages that include the device model and whether the fault appeared suddenly or gradually usually get a complete answer first time, rather than a request for more detail.