I have two cats, and right now they're losing their winter coats. Hair - EVERYWHERE! They come in with wet, muddy paws from the outside too. This cleaner has been an absolute godsend. It removes every single hair as it goes, and lifts up dried in dirt and dust, and sucks up any traces of wet mud as well. It is mega powerful - getting really deep into the carpet fibres. My carpets are actually quite new - but the colour of the water once I'd cleaned absolutely shocked me! I think the added heat means stains just get blasted away! I highly recommend this product!