I faced the same problem. Most people recommend spinosad. Home Depot has a Captain Jack's spray that worked well to control them, but I could never eradicate them. However, my problem was that I didn't take action in veg. I saw them in early veg and just thought they'd die off. By flower it was clear they wouldn't, and I didn't feel comfortable spraying the buds a lot. Also, I didn't understand the lifecycle. You have to keep spraying to catch them as they move through those stages. Many say they are able to eradicate using this spray. You'll need to spray every couple days for about 7-10 days. (I would go 14-18 days because if you miss anything, you have to start over).
What I did was use a Hot Shot No-Pest strip. When lights were out I'd turn the exhaust fan down to almost no air circulation and put the strip in the tent for 4-8 hours. I did that every day the first couple days, then once every other day for 7-10 days. Never had a thrip since. I kept the strip in a zip-lock freezer/storage bag when not in use.
The strips are toxic and the label says not to use it in spaces that will be occupied within 4 months following the use. However, in today's age of product labels (such as buckets warning not to put your head in it filled with water or you might drown) I take product labels with a grain of salt. Information such as
this indicates it's not that bad. Since you seem to be asking for a nuclear option, I think this would be the safest compared to foggers, spraying toxins on your plants, etc.
[1] In fairness, I'm pretty bad about protecting myself from chemicals. I've recently become allergic to contact to cannabis resulting in a rash. I'm pretty sure it resulted from me using weed killer without gloves. The tank sprayer handle leaks and it ran onto my finger which is now the sole point of rash which becomes angry when I contact cannabis on any part of my body. I doubt it had anything to do with the strip I used 3-4 months earlier. But, I want to mention it.
