My Aunt used to breed and show Rough Collies, she used to bath the dogs when they were moulting as she swore it loosened the dead hair. My Mum's always done the same with her G.S's and it seems to get the worst off.
Zeus is groomed daily and the carpets still get a coating of hair......to keep on top of it I would need to be hoovering 24/7 lol. My motto is life's to short to worry about it.....if you dont like doghair don't visit my house pmsl