.....never if I can help it! I used to have a bad back and the most I could manage before I needed to lie down was 1 room at a time, so it used to take a whole week to vacuum the house and we'd just troop the dirt back into the clean rooms from the dirty ones. And I never had a clean house. So DH started to do it for me and now my back is better (thanks chiro!) I still play the helpless female and get DH to do it. He does it about once a week - but I have to bug him for a day or two before he will.