Oh man so do I. I have used spinosad however have not completely rid myself of the problem, This may be because I wasn't very thorough with the sprays but have heard only good things about the stuff.
Thrips have a very short life, but they can be very destructive in that very short time, there can be as many as 15 generations each year. For control encourage predators to be there, Pirate Bugs, Lacewings, Lady beetles, and that means not using broad spectrum poisons which will eliminate those predators. Blue and Yellow sticky traps can catch adult Thrips, if they do not mate and do not lay eggs that will help reduce the population, and diligent use of Insecticidal Soaps can help. The broad spectrum poisons, such as the Neem Oil products, Pyrethrin based dusts and sprays should be used only if absolutely necessary, but are very effective.