I bought a four burner TRU-Infrared 3 year ago and within 8 months the grate was rusted and I only used it 3 times. Like all other reviewers, this cooking system is great but the grate is really poorly designed and not easy to clean up. To be fair, I did not coated with granola oil as Charbroil had suggested online. I am not too sure it will make a big different because it is very difficult to clean if you use any kind of BBQ sauce. Will not buy this again. My grill is always under cover when not in use.