neem doesn't work for that?
Neem retards the growth of Thrips by attacking their reproductive system, It takes around 2-3 weeks for thrips populations to slow down, Neem will probably not rid you of them completely.
SPINOSAD is one of only a few products that can kill thrips
SPINOSAD is a bacterium that was found in an old Rum distilery by a vacationing scientist.
It is a completely organic way of killing MANY PESTS.
I have successfully used it against THRIPS, FUNGUS GNATS others have used it against APHIDS, WHITEFLY, CATERPILLARS and SPIDER MITES.
When using SPINOSAD i spray 3 times at 3 day intervals making sure i spray my plants, grow room and also the medium i am using.
If you are in HYDRO you can add it to your res but be carefull of pH swings as it can have a tendency to alter your pH.
J