Reading about various treatments on your website. Have many houseplants and a number of them Thrip infested. Have tried insecticidal soaps, Murphy’s Oil Soap with orange oil. Also purchased blue sticky strips that are supposed to attract thrips. But assuming these are only effective on flying adults, need something(s) for the larvae and juveniles. Would Talstar and/or Cyfluthrin be effective?
No doubt the TALSTAR listed in our THRIP CONTROL ARTICLE would provide a quick knockdown and long term residual of all stages. And you happen to be right on the mark with your thinking; the young larvae and juvenile stages aren’t much affected by the traps or the organic options you listed. The main problem with the organics is that they don’t provide any residual so any eggs hatching a day after you spray will thrive. But with Talstar this won’t happen. Other benefits include that it’s easy to mix, odorless and only a small amount of concentrate is needed per gallon of water so it goes a long way.
Here are direct links to the information and products listed above:
Thrip Control Article: http://www.bugspray.com/article/thrips.html