The systemic should do it. I use Orthene. What kind do you have? You will need to give them more in 2 or 3 weeks. And maybe once more in 2 more weeks. Close inspections to determine if a third time is needed.

Do not use Orthene indoors!! Orthene is acephate, which is an organophosphate or nerve disrupting chemical. And that means your nerves as well as the insects it controls. And you do not need to get as heavy handed as a systemic. Insecticidal soap or neem oil are highly efficient in the control of thrips. And you can hang yellow sticky traps nearby to monitor and catch roaming thrips.

"I bought a systemic and hort soap Nd am now washing all the plants down in the shower and am nuking them With a tree and shrub granular." Close the bathroom door and protect yourself and it is OK to spray orthene. A fan pointing out the window in the bathroom is good also.

Neem oil works great. Orthene is overkill IMO, in more ways than one. That's some scary stuff.

Neem oil will burn your plants in sunny weather. Any oil left will burn plants. As systemics go orthene is the most benign. It stinks so people relate that erroneously to harmful. Linda, it seems you are going on intuition, not science.

This is just one comment I got off google re:Orthene, this stuff is BAD

Search Results

Featured snippet from the web

Toxicity:
Moderate to high toxicity to humans (eye and skin irritations) Avoid
repeated prolong exposure to the product. Moderate to high toxicity to
birds. Low toxicity to fish. Highly toxic to bees and other beneficial
insects.

LOL!! Ignorance is bliss :-) There is nothing benign about acephate!! Read up on organophosphates if you don't believe me. Most have already been removed from the consumer marketplace. And Linda is entirely correct - look at the effects on humans of acephate compared to neem oil and then you decide which is safer to apply indoors. IPM suggests that you go for the least disruptive approach first. Using orthene/acephate when something like neem would work equally as well is hitting the heavy artillery when just a slap on wrist would achieve the same result.

btw, neem and other horticultural oils do not "burn" plants when applied correctly.

enjoy the bugs

Winning the battle against pests with harmful products such as orthene could very well prove to be a Pyrrhic victory.

There seems to be a strong belief by some that thrips cannot be controlled by anything other than heavy duty pesticides like acephate. That is simply not true and it is more of a "take the easy way out" choice than one that is based on horticultural science. Even commercial greenhouses seldom resort to systemic pesticides but rely primarily on contact sprays (oils, insecticidal soaps, natural pyrethrins). One major greenhouse grower of annuals (within the top 100) uses only biologicals to control thrips! Just back off the acephate - it is overkill in this case and unnecessarily dangerous to the applicator.

btw, the Orthene is clearly labeled "Not for Indoor Residential Use".