CancellationTokenSource, When to dispose?

CancellationTokenSource, When to dispose?

When am i supposed to Dispose of a CancellationTokenSource? If i for
example make one and put it in Threads everytime i click a button:
private void Button_Click(object sender, EventArgs e)
{
if (clicked == false)
{
clicked = true;
CTSSend = new CancellationTokenSource();
Thread1 = new Thread(() => Method1(CTSSend.Token));
Thread1.Start();
Thread2 = new Thread(() => Method2(CTSSend.Token));
Thread2.Start();
}
else
{
CTSSend.Cancel();
CTSSend.Dispose();
clicked = false;
}
}
Am i supposed to dispose of it like that? Cause if so, it will be a bit
problematic as i need to put it in the Disposer which will dispose when
the application closes, as there isn´t a guarantee that it won´t be
disposed already if i am not carefully waiting for it, and that will cause
an ObjectDisposedException.
I even tried with this to prevent the exception (as i would like to not
use Try Catch, i would like to not even get the error in the first place
in this case).
if (CTSSend != null)
{
CTSSend.Cancel();
CTSSend.Dispose();
}
if (CTSReceive != null)
{
CTSReceive.Cancel();
CTSReceive.Dispose();
}
But well, maybe i should Only dispose of it in the end, and don´t dispose
of it after Cancel everytime? Though i don´t like how that would keep
adding resources to a new object.
How do you people do with these cases?