Wasp blocking airplane pitot tube - photo

[ranald]

Serious hazard for certain and they are downright nuisances.

I've had a breather hose for my CAR (about 2mm dia) blocked by little blighters when unhooked overnight.

For my AIR TOOLS (as in my tip published by The Woodworker and Woodturner (UK)) I have used all manner of deterrents/preventatives for dust and wasps. Once the storage plastic boxes deteriate, the nuisances find their way into air tools. 40 years ago I used lead head nails: now I use a combo of wine corks with holes drilled in to cover the connector for seldom used tools (as the cork breaks/crumbles with regular usage as they need to be a tight fit) and for regularly used air tools, I use the cheap grinding wheels as used in drills.

They are good insects for killing pests in your garden/orchard.

cheers