I did arrange for a cleaner for a couple of weeks 2 years ago, before I had to stop her as it was causing too many arguments with dh (I still aspire to getting her back though - it has helped motivate me to keep the place tidy, so that I can counter-argue dh!).
She told me that my oven was so dirty that she wouldn't be able to clean it in one week - it would take a few weeks of effort!
.... and it's STILL not been cleaned!
BTW - I wasn't suggesting that I hand wash my bras - I'm just amazed that anyone does! I know the underwiring can cause problems in the washing machine, but I do try to remember to put them into a wee laundry bag before I put them into the machine.