[sarah (OP)]

Does anyone know what hormones wasps use, and do they use a communication system, to tell other wasps strawberry jam is in the vicinity?

[Hayseed]

I don't think hormones are that big of a deal.

It's opera.

[Bored chemist]

Does anyone know what hormones wasps use, and do they use a communication system, to tell other wasps strawberry jam is in the vicinity?

They can't use hormones for that, but they might use pheromones
https://en.wikipedia.org/wiki/Pheromone