Sub effac()
Dim sh As Object, c As Range, prem As String
For Each sh In Sheets
If sh.Name <> "Feuil1" Then
With sh.Columns(1)
Set c = .Find(Sheets("Feuil1").[A10], lookat:=xlWhole)
If Not c Is Nothing Then
prem = c.Address
c.EntireRow.ClearContents
Do
Set c = .FindNext(c)
If Not c Is Nothing Then c.EntireRow.ClearContents
On Error Resume Next
Loop While Not c Is Nothing And c.Address <> prem
On Error GoTo 0
End If
End With
End If
Next sh
End Sub