After Penny had her bath today (made inevitable by the fact that she rolled in unmentionable things on recent walks), I thought I should clean the carpet, and this is the only effective way I know that doesn't use chemicals. (The vacuum cleaner can't suck strongly enough.) I get down on my hands and knees and rub with a wet cloth. It's rather relaxing, actually.
And how does the hair get on the carpet? Well, Penny immediately demonstrated her technique.