This unit is a huge waste of money. It did not clean my stove or the hard water stains in my shower. After spending a good forty minutes trying to remove the stains from my oven, I finally broke down and used Easy-off and was done in 5. The coup de grace was that when I went to try to use the next day, the attachment end had a huge leak in it, spraying steam everywhere except where I wanted it to go, rendering the whole thing useless. Do not waste your money on this product.