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Anita from Watertown, New York writes

Does Sevin Concentrate kill psyllids and leaf miners on boxwoods?

How long does it take to kill these insects? I sprayed 4 days ago and they are still alive.

Answer:

Sevin Concentrate is labeled for both psylids and leafminers.  The exact amount of time it takes to kill an insect will depend on a number of factors, such as where the insect is in its life cycle and how long it spent in contact with a treated surface.  You should start to see results in a few days, but reapplication may be necessary per the product label, especially if the infestation is severe.  

Answer last updated on: 05/15/2018

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