I've been hit with thrips a few times and have come to accept is as a fact of life for my locale.
I've found spraying Spinosad to be effective. In the past, I've followed the directions and done multiple applications in which I drenched the plant, spraying the tops and undersides of the leaves. The latter is more important because that's where they live and where they lay their eggs. Spinosad is an organic product that is harmless to humans and can be applied to even fruiting crops just a few days before harvest and ingestion. Highly recommended.
I've found spraying Spinosad to be effective. In the past, I've followed the directions and done multiple applications in which I drenched the plant, spraying the tops and undersides of the leaves. The latter is more important because that's where they live and where they lay their eggs. Spinosad is an organic product that is harmless to humans and can be applied to even fruiting crops just a few days before harvest and ingestion. Highly recommended.