Sitecore Reset Layout

Sitecore.Data.Database db = Sitecore.Configuration.Factory.GetDatabase("master");
Process(db.GetItem("/sitecore/content/home"));

private void Process(Sitecore.Data.Items.Item item)
{
 Sitecore.Data.Fields.Field field = item.Fields[Sitecore.FieldIDs.LayoutField];

 if (! field.ContainsStandardValue)
 {
    item.Editing.BeginEdit();

    field.Reset();

    item.Editing.EndEdit();  
 }

 foreach (Sitecore.Data.Items.Item child in item.Children)
 {
  Process(child);
 }
}