I quit foiling for 3 reasons:
1. I am lazy
2. I have a gas gill that does a great job of cleaning the carbon and gunk off my pellet grill grates and parts.
3. After cooking over it - look at the edge of the aluminum foil that is wrapped around the heat deflector/drip pan in a pellet grill - the "under side" if you will...Clearly the aluminum foils disintegrates, yet there is no ash or slag in the belly of he pit that can be found....So - where did it go? We know that the air volatility of a pellet grill's fan driven airflow can carry ash to your food occasionally - right?
So...WHERE did the tiny particles of aluminum go?
You know. Like or not....you are consuming some of it. SO, - is it good for you?
You decide......