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Amy from Nanticoke, Pa writes

Would Sevin Concentrate be recommended to treat flies and wasps in a magnolia tree?

I recently purchased a home and I have a magnolia tree that is about 15 ft tall. It is over run/covered with flies and wasps. I've used Sevin already on the lawn (mix with hose water) and sprayed the trees we well, including leaves, branches and trunk. Many flies died, but it has not done anything to the wasps and a lot of flies are still around. There are so many, I can't get close enough to the truck to trim low branches. There are not any noticeable nests in the tree. Any idea what I can do?

Answer:

Tempo SC Ultra would be a great choice to apply as a foliar spray for wasps, flies, hornets, etc for a quick knockdown. We would also suggest using Wasp X Wasp and Hornet Spray for a contact kill and foaming residual. 

Answer last updated on: 07/16/2018

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