Ah so it sounds like more a George foreman type, i think my dad's thing is basically a grill convection oven, hence my assuming it has filters and shit needing cleaning
The pellet grill kinda sucks to clean but it could be worse. There's the grills, and a big plate below that for stuff to drip onto, with grease running down a slot to a bucket with replaceable inserts
I just kinda scrape all that into the sink, throw the grills into the dishwasher, and so far ive totally ignored the drip channel. But it hasn't gotten tooooo gross after maybe 7 uses, only like 1/4 inch of grease in the bucket