Yeah, ditto on what Snow Dog said - lazy SOB's will hual them in, but its too much work to haul them back out.  I think came across two on this years trip.

Say Yellowbird - used to be, "they" warned people to not use refridgerator grates for cooking - cadmium? or some other heavy metal/carcinogenic kinda stuff.  Could be its safer now?
A small grill from a BBQ might be a better/safer choice.

Me, I "grill" on a stick.