It's been a particularly fungal year here around the squash plants and zucchinis but I don't use any sprays. I try to periodically clear spent leaves back to new and fresh ones and the plant keeps producing just fine.
When I trim back the leaves I check them out and make sure these guys make it back to the plant.
They are my heroes.
The job is enormous and they are so small but they keep busy all day munching away at the fungus.
How could you bear to spray and wipe these guys out?