>Sara says "Upon closer inspection, however, I discovered that they were
>chewing the surface off of the wood and leaving hundreds of small tracks.
>I tried spraying the wood with bee/hornet spray but this has not deterred
>them."

As Lloyd points out, "these are almost certainly what we call 'Bald Faced
Hornets'."

We treat our teak furniture every year with a light sanding and a fresh
application of teak oil.  That will discourage the hornets and extend the
life of the furniture.

If your patio furniture includes a table, no matter how short the
effective life of the insecticde is supposed to be, I'd not risk spraying
a surface which might come in contact with food or the hands which will
put it in my mouth.

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