Spinosad works great on thrips
Lessons learned...outdoor plants stay outdoors. Indoor plants stay indoors and NO mixing the soil together!!
I'm 100% CERTAIN the thrips in my garden here in BC are coming from the bales of Sunshine Mix #4. I've used an arsenal of most of the things mentioned here, but with every new bag of sunshine 4 , a new emergence of thrips.
I have a composite curing oven , I'm thinking of making some large "cookie sheets" out of stainless 20 gauge and sterilizing every new bag of soil with a cycle thru the oven. It's got PLC systems I can customize from my laptop for ramp up ramp down and temp hold time. That and it's probably big enough I can sterilize 1/2 to 3/4 of a bale at a time.
Gonna take some macGyverin but I'm gonna see if it works.
I think it's an alien conspiracy these thrips in the soilless mix..... that or the industry is inoculating bags of "sterilized" media to keep the cash registers dinging at their retailers for the latest greatest pest control.
I design machinery for a living and I can already envision in my head, a fully programmable, conveyor belted soil sterilizing system that could be miniaturized to heat/vaccum sterilize a bale at a time LOL
Found the American.