I've only used this once so far, but it's awesome! Plenty of power to scrub the grill on my Weber kettle, got it much cleaner than a regular grill brush. The next test will be the grate on my offset smoker, a dirtier job for sure, but I don't have any reason to think it's not up to the task.
The Typhur Grill bot is very good but has a few shortcomings in my opinion. You need to put some downward pressure on the head and it gets very hot. You need to wear grill gloves when using it.
Just got it before going out of town so can’t honestly say how well it cleans but the brush head is very similar to a manual brush I’ve used in the past and that works well, I anticipate this will work just as well if not better and the build quality seems very solid.
I recently bought this and it does seem to do a very good job cleaning my grills. I didn’t understand the steam part of it, but now that I have used it it is using the 400° temperature in the grill to heat the water in the brush.