15 seconds to fully clean a parrot droppings (rude) against soaking 10min with a very partial success. And of course without chemicals (with 6800). Way too expensive. And again, we can see the pettiness Karcher: an indispensable accessory not supplied with a device sold a whopping $ 500euro. It would be nice to think like a rotating version of toothbrushes. And there are still many 15 euros. So only 3 stars, given the inflated price.
