"tgodiver" > wrote in message
...
> can I just put the wood chip on top of the lava rocks without wrapping
them
> in foil. does that damage the grill?

It will just burn up faster that way. A foil pouch or a tuna fish can with
a foil cover works good. Just poke a hole or two in the foil as you do want
some oxygen getting to the wood.
Ed