⭐️⭐️⭐️⭐️⭐️ 5 star review: Understand What It Is Intended To Do & You Should Be Pleased It does what it was represented to do and does it well. I have at least 15 outdoor cooking devices, many of which are modified. Very few standard grates. I have a 36" Blackstone Griddle which it does a stellar job on. I think it should be marketed more heavily to that niche. I was concerned it would hurt itself on my Grill Grates that are extruded aluminum w/1"tall fins. It didn't miss a beat and cleaned the top of thins where I expected where the food contacts flawlessly. I have special brushes to get deep into the fins. I tested it for 10 minutes and saw an improvement, but not complete. Reset for 30 minutes & they were flawless. Time matters. Also have a porcelain coated cast iron grate on a Weber Grill. Deep pockets that it can't reach, which is to be expected. Last but not least, the only OEM regular grate I had was on my Kamado Egg. It worked best on the thinner grate, but this one had handles on each side as it had a flip up section. That confused the algorithm so that it kept backing up and changing directions and only cleaned one side. I have ordered a different grate as I always intended that it should work flawlessly on. Highly recommended for the intended application! I wouldn't have expected any different results.