Hello, can anyone help, we have real teak worktops that were very expensive. We oil them with teak oil (not as ofetn as we should) but when we do, they seem to stain much worse than they were before we oiled them, we leave them for a couple of days, (4 the last time) before putting anything on them, yet they look awful now? What are we doing wrong? They were so expensive and I cant get thm looking nice!