The tub I'm talking about is the bathtub. The steamer works by you fill the chamber with distilled water, and plug it in. It heats the water into steam when you pull the button.
Oooh that's what I thought
. So you have hot water in the tub and you put the grate in, and then you wipe it?
There's no water in the tub. The water goes in the steamer itself. I just take my grate into the bathtub, because then instead of wiping off the poo the steam is loosening/cleaning, it just falls into the bathtub, and I can rinse it down the drain. I use the scrub attachment to the grate. The rest of the cage doesn't have as much poo, so I just use the cloth attachment and it wipes off.