Insect Pest Control
Q.

hover flys

Zone roseville mi. 48066 | maryverm66 added on August 14, 2017 | Answered

they have a nest outside in a humidafier pipe

A.
A.Answers to this queston: Add Answer
Downtoearthdigs
Certified GKH Gardening Expert
Answered on August 16, 2017

I would consult a pest control or use a insect treatment from your neighborhood store.
If they are not bothering you, these are beneficial to your garden and you may want to leave them.

https://www.gardeningknowhow.com/garden-how-to/beneficial/hover-flies-in-gardens.htm

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