Filtering Button Error

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VB

I always get the error "In operator without () in query expression" using these codes:
(It works fine for Status and Client when I made everything else into a comment but when I enabled everything I get the error)

'For Status
       Dim dt As DataTable
       Dim ds As New DataSet
       cnn = New OleDbConnection(connectionString)
       Dim statList As String = "("
       For item As Integer = 0 To CheckedListBox1.CheckedItems.Count - 1
           statList += "'" & CheckedListBox1.CheckedItems(item) & "',"
       Next
       statList = statList.Substring(0, statList.Length - 1) + ")"

       Dim sql = "select * from Status where Stat in " + statList

       Try
           cnn.Open()
           adptr = New OleDbDataAdapter(sql, cnn)
           adptr.Fill(ds)
           adptr.Dispose()
           cnn.Close()

           dt = ds.Tables(0)
           Form5.DataGridView1.DataSource = dt

       Catch ex As Exception
           MsgBox(ex.ToString)
       End Try
       Form5.DataGridView1.Visible = True


       'For Client
       Dim dt1 As DataTable
       Dim ds1 As New DataSet
       cnn = New OleDbConnection(connectionString)
       Dim clientList As String = "("
       For item1 As Integer = 0 To CheckedListBox2.CheckedItems.Count - 1
           clientList += "'" & CheckedListBox2.CheckedItems(item1) & "',"
       Next
       clientList = clientList.Substring(0, clientList.Length - 1) + ")"

       Dim sql1 = "select * from NTIdb where Client in " + clientList

       Try
           cnn.Open()
           adptr = New OleDbDataAdapter(sql1, cnn)
           adptr.Fill(ds1)
           adptr.Dispose()
           cnn.Close()

           dt1 = ds1.Tables(0)
           Form5.DataGridView1.DataSource = dt1

       Catch ex As Exception
           MsgBox(ex.ToString)
       End Try
       Form5.DataGridView1.Visible = True

       'For Usage
       Dim dt2 As DataTable
       Dim ds2 As New DataSet
       cnn = New OleDbConnection(connectionString)
       Dim usageList As String = "("
       For item2 As Integer = 0 To CheckedListBox3.CheckedItems.Count - 1
           usageList += "'" & CheckedListBox3.CheckedItems(item2) & "',"
       Next
       usageList = usageList.Substring(0, usageList.Length - 1) + ")"

       Dim sql2 = "select * from NTIdb where ProdUsage in " + usageList

       Try
           cnn.Open()
           adptr = New OleDbDataAdapter(sql2, cnn)
           adptr.Fill(ds2)
           adptr.Dispose()
           cnn.Close()

           dt2 = ds2.Tables(0)
           Form5.DataGridView1.DataSource = dt2

       Catch ex As Exception
           MsgBox(ex.ToString)
       End Try
       Form5.DataGridView1.Visible = True


       'For Product Category
       Dim dt3 As DataTable
       Dim ds3 As New DataSet
       cnn = New OleDbConnection(connectionString)
       Dim categoryList As String = "("
       For item3 As Integer = 0 To CheckedListBox4.CheckedItems.Count - 1
           categoryList += "'" & CheckedListBox4.CheckedItems(item3) & "',"
       Next
       categoryList = categoryList.Substring(0, categoryList.Length - 1) + ")"

       Dim sql3 = "select * from NTIdb where ProdCategory in " + categoryList

       Try
           cnn.Open()
           adptr = New OleDbDataAdapter(sql3, cnn)
           adptr.Fill(ds3)
           adptr.Dispose()
           cnn.Close()

           dt3 = ds3.Tables(0)
           Form5.DataGridView1.DataSource = dt3

       Catch ex As Exception
           MsgBox(ex.ToString)
       End Try
       Form5.DataGridView1.Visible = True


       'For Brand
       Dim dt4 As DataTable
       Dim ds4 As New DataSet
       cnn = New OleDbConnection(connectionString)
       Dim brandList As String = "("
       For item4 As Integer = 0 To CheckedListBox5.CheckedItems.Count - 1
           brandList += "'" & CheckedListBox5.CheckedItems(item4) & "',"
       Next
       brandList = brandList.Substring(0, brandList.Length - 1) + ")"

       Dim sql4 = "select * from NTIdb where Brand in " + brandList

       Try
           cnn.Open()
           adptr = New OleDbDataAdapter(sql4, cnn)
           adptr.Fill(ds4)
           adptr.Dispose()
           cnn.Close()

           dt4 = ds4.Tables(0)
           Form5.DataGridView1.DataSource = dt4

       Catch ex As Exception
           MsgBox(ex.ToString)
       End Try
       Form5.DataGridView1.Visible = True


       'For Account Executive
       Dim dt5 As DataTable
       Dim ds5 As New DataSet
       cnn = New OleDbConnection(connectionString)
       Dim accList As String = "("
       For item5 As Integer = 0 To CheckedListBox6.CheckedItems.Count - 1
           accList += "'" & CheckedListBox6.CheckedItems(item5) & "',"
       Next
       accList = accList.Substring(0, accList.Length - 1) + ")"

       Dim sql5 = "select * from NTIdb where AccExec in " + accList

       Try
           cnn.Open()
           adptr = New OleDbDataAdapter(sql5, cnn)
           adptr.Fill(ds5)
           adptr.Dispose()
           cnn.Close()

           dt5 = ds5.Tables(0)
           Form5.DataGridView1.DataSource = dt5

       Catch ex As Exception
           MsgBox(ex.ToString)
       End Try
       Form5.DataGridView1.Visible = True