how to get rid of wasps in loft

Wasps cluster on a hexagonal nest attached to a weathered blue wooden surface. The nest contains eggs and larvae within its cells.

When Do Wasps Become Aggressive?

Wasps tend to become more aggressive in late summer and early autumn, particularly during the months of August and September pestdefence.co.uk. In the UK, this seasonal shift in wasp behaviour is well documented – as summer wanes, wasp colonies reach their peak size and their behaviour turns noticeably more hostile pestdefence.co.uk.