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Billbob you also mentioned that young wasps had been seen recently

You should also be aware that there is a wasp species call The Paper Wasp and it is a lot smaller than the more common German...

Contact the manufacturer through the web site and ask for a contact for a registered applicator
You might find a local conservation trust or farming group who do coordinated applications as a free...

Yeh well...that wasn't quite what I was thinking
But good on you

And I would note despite it being a warm dry summer wasp numbers here have been extremely low