You could wouldnt even need that. https://de.wikipedia.org/wiki/Opferanode

Yes, but you have to replace the sacrificial anode every so often.

https://en.wikipedia.org/wiki/Galvanic_anode

Like the plate of food on the grass for the bees at the barbecue

Wasps, not bees.

(Sorry, I'm a bit of a nerd. But I am sure you can cope with that.)

Does pork factor into this? (Serious question for an expert, not a joke.)

You did ask the bee for pork

Retract my bee slander!!

More for the wasps, I guess?

Wait, does this actually work?

Just wish I could claim credit. Decoy plate is essential.

And since nobody complained it sounds wasteful, I suppose it should be able to be just scraps.

May your next camping trip or picnic be wasp free!

It sure attracts the wasps. Whether you have less of them on your real food compared to the counterfactual, I don't know.