I hang a wren house on the coop, to keep the wasps away. I hang one on the edge of my house, too. I don't know if all wrens are good for this, but the ones I have here are. We just discovered it by accident.
We've also used the disposable traps for wasps. They work like the disposable fly traps, except it uses a different, not stinky, bait. They're usually a clear jar and yellow lid, instead of a red lid like the fly traps, when you're shopping for them. They always worked well for us, too.
We've also used the disposable traps for wasps. They work like the disposable fly traps, except it uses a different, not stinky, bait. They're usually a clear jar and yellow lid, instead of a red lid like the fly traps, when you're shopping for them. They always worked well for us, too.