Hi All,

I noticed that my back yard rafters have about 10 wasps nests
across them.

And, I notice a lot of wasps on my plants too.

They are not aggressive and leave me alone.

Are these guy doing me any good? Are they eating pests? Or farming
pests, like aphids? Don't see any aphids.

Question: they are pretty easy to kill. Leave them alone or
exterminate?

Presumably, the amount of nests has to do with close proximity
to a food source. Correct?

Many thanks,
-T