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Grasshopper problem #871890

Asked June 06, 2024, 12:58 PM EDT

Hi, I live on 4 acres in Sedalia. We have a terrible grasshopper problem. I have tried using a garlic spray and a product called Mosquito Go that is supposed to deter them. I'm not sure if it is helping as our infestation is a big problem. Have you heard of Ecobran? I am curious to know what your thoughts are about it? Also do you have any other suggestions? Last year, we lost many plants to grasshopper damage and really want to try to prevent this from happening again this year. Thank you!

Douglas County Colorado

Expert Response

Hi Patricia,

Grasshoppers can indeed by a huge headache, and difficult to control.

Ecobran is an insecticide bait, it would be applied early in the season (now) in order to attract and kill the young grasshoppers in your area and prevent them becoming adults. 

Even so, though, because grasshoppers are so mobile, if it is a good year for grasshoppers (as last year seemed to be in Sedalia) more could just fly or hop in to your yard.  For these, hand-picking (in the morning, when they are sluggish) or contact-insecticide sprays can help mitigate damage.  Exclusion, when possible, is the only sure bet.

Once grasshoppers have invaded insecticides would need to be reapplied every few days as long as the invasion continues; read the product label to determine the allowable frequency of applications. Carbaryl and other insecticides such as cyfluthrin or other pyrethroids commonly used as sprays for grasshopper control are very toxic to bees and insect predators of grasshoppers.  Carbaryl in bait form (Ecobran) is less hazardous to bees. 

This CSU Fact Sheet contains a bit more information about grasshoppers in Colorado and their potential control in gardens: https://extension.colostate.edu/topic-areas/insects/grasshopper-control-in-gardens-small-acreages-5-536/

I hope this is helpful!

Cordially,

John

An Ask Extension Expert Replied June 07, 2024, 5:42 PM EDT
Thank you for your email.
As far as using Ecobran, is there risk to wild birds if they consume either the Ecobran or a grasshopper that has ingested the product?  I try to not use chemicals in my garden.  I appreciate your help!

On Fri, Jun 7, 2024 at 3:42 PM Ask Extension <<personal data hidden>> wrote:
The Question Asker Replied June 09, 2024, 5:04 PM EDT

Hi Patricia,

According to the National Pesticide Information Center, a cooperative educational center between Oregon State University and US EPA, carbaryl (the active ingredient in Ecobran) is "practically non-toxic or slightly toxic to birds."   

If that risk is not acceptable, hand-picking or exclusion would provide alternatives.

I hope this helps!

Cordially,

John

An Ask Extension Expert Replied June 10, 2024, 11:11 AM EDT
Hi
I thought I would share these photos with you.   We have 4 acres in Sedalia and have a terrible infestation of grasshoppers. Last week I mowed and I used Dawn dish soap and filled the front bucket of our tractor with soapy water.  I didn't catch hundreds but thousands of grasshoppers!   They drowned in the soapy water. I also have a long set of tweezers that I use to pick them from plants.  The battle contnues!
Thanks 
Patricia Kruse 


On Mon, Jun 10, 2024, 9:11 AM Ask Extension <<personal data hidden>> wrote:
The Question Asker Replied June 21, 2024, 12:17 PM EDT

What a clever idea!  Please keep us in the loop as to if you notice a difference in numbers over the season as a result of your efforts.

Cordially,

John

An Ask Extension Expert Replied June 21, 2024, 1:45 PM EDT

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