Sorry for my negative chime in here but look at all the crud on that grill! Yuck!
I’m a big fan of keeping my grill clean by brushing it deep with a fairly new grill brush, occasionally wiping it with a cloth and some olive oil and keeping it as non stick and rust free as possible with PAM spray.
Are those grills in upside down with the flat side up? They’re usually triangular to keep the crap off your food. As you can tell I'm not a happy camper here.