[Excel] Remove of custom Menu-Items not always working

Hi, I'm using the following code to remove my custom Menu-Items when closing the file.
On testing the removal code is working, however in the daily usage the Customs Items sometime stay with Excel (Opening Excel with no file would show those items). I couldn't find the actual steps which would not run the removal code.

Am I using the wrong Event?

Code:

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Private Sub Workbook_BeforeClose(Cancel As Boolean)
Dim Text As String
On Error Resume Next
Text = "TG"
Application.CommandBars("Worksheet Menu Bar").Controls(Text).Delete
Text = "RBH"
Application.CommandBars("Worksheet Menu Bar").Controls(Text).Delete
End Sub

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