I'd been putting out tin of cat food, sardines, fresh fish skins etc over the last few weeks but had little interest from the wasps congregating on one plant near our front door. Was going to do the fipronil lacing of tinned fish once they showed enough activity. There's wasps coming from 3 different directions to this meeting spot.
Someone put us onto this.
https://hawkeye.kiwi/products/pest-control/wasp/
The lure is carb/protein mix, and supposedley won't attract bees so safe on them
They have been going nuts on it so far. Not quite been a week. Looking forward to seeing the numbers drop off asap.
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