【VBA】PDFファイルを配列を使って高速に削除する方法

Option Explicit
Sub DeletePDFFiles()
    Dim ws As Worksheet
    Set ws = ThisWorkbook.Sheets("Sheet1")
    Dim lastRow As Long
    lastRow = ws.Cells(ws.Rows.Count, "A").End(xlUp).Row
    Dim i As Long
    Dim filesToDelete() As String
    ReDim filesToDelete(0 To lastRow - 1)
    For i = 1 To lastRow
        If Right(ws.Cells(i, 1), 4) = ".pdf" Then
            filesToDelete(i - 1) = ws.Cells(i, 2).Value & "\" & ws.Cells(i, 1).Value
        End If
    Next i
    Application.ScreenUpdating = False
    For i = LBound(filesToDelete) To UBound(filesToDelete)
        If Len(Dir(filesToDelete(i))) > 0 Then
            Kill filesToDelete(i)
        End If
    Next i
    Application.ScreenUpdating = True
End Sub