A Program to Repel Mosquitoes !?!

Question

No, I'm serious,

Recently, I read that when the PC's Peizo buzzer is made to vibrate at a certain frequency the sound would repel mosquitoes.

Is that true ?

How do I programmatically access the PC buzzer (not the speaker) in C# preferably

this is a Honest question folks :)

EDIT: I don't know about mosquitoes , but my head hurts like mad. Argh..!

Answer 1

It seems you can do this with an unmanaged call to native windows code, as described here: http://www.geekpedia.com/code118_Beep-In-The-PC-Speaker.html

Answer 2

using System.Runtime.InteropServices;

[DllImport("KERNEL32.DLL",
EntryPoint="Beep",SetLastError=true,CharSet=CharSet.Unicode,
ExactSpelling=true,CallingConvention=CallingConvention.StdCall)]

public static extern bool Beep(int pitch , int duration);

Beep(500,1000);