Can you post pictures of your damage?

I have noticed a lot of moths in my neighbors lawns this year. My next door neighbor has brown areas from them. it is the larvae stage that causes damage, so you must apply before you see moths. I applied BtK and Bifenthrin in May. I applied imidacloprid and bifenthrin late June and i have not seen many in my lawn. I had alot last year.

What did your lawn care companies apply?

 

Lawn giant was last year, this year is agri - tech. Dont remember the ones before that. I moved here 6 years ago, and this is an ongoing issue. They did do the pesticides before we saw the moths. I did 2 extra treatments after I saw a few moths to make sure it was taken care of, because its an on going issue. So , that time frame, is about 2 and a half months ago, and stopping about 1 month ago. So that is late june to mid august. Ill get some pics.

 

The moths are more concentrated in these areas also. But they are all over the lawn. These spots were green weeks ago. Iys not lack of water, even though I dont have a sprinkler system. I will water myself if its dry. Soil like 4 inches of dirt over sand. So it stays moist even when we dont have a lot of rain.

 

Just dragging one foot will scatter 8 t

o 10 months.

 

Do you know what they applied?

Do you want to do it yourself?
Next year I would apply chlorantraniliprole in April / May. This will also protect for grubs. I would then spray Btk / Bifen Monthly. Or maybe a Btk / spinosad combo if you dont like insecticides.

Btk is Bacillus thuringiensis var. kustaki. Thuricide Concentrate - Bonide

Google Search

 

I can do it myself. What was done was simmiler to what you proposed. They put down grub killer and then flea killer, 1st is the same as or simmiler to chlorantraniliprole. The fles stuff I looked up and was also supost to kill webworms. The bifen is similer to the permethium, in that they can kill everything at diffrent concentrations. I didnt spray monthly. I will get what you recommend as , my way aperently isnt working. Insecticides are great, lol. I just need to kill these things. I also have a call onto a freind that has a large landscape compony. They are getting the chemical people together with the lawn people. Ty.

 

They put down grub killer

Grub Killer can mean a few different things. If they applied a curative like trichlorfon at not the right time in the lifecycle, then it will not control webworms. The permethrin is similar but does have some residual.

My recent research of chlorantraniliprole (i do not use it currently) has shown it to be expensive. How much lawn do you have?

Does anyone have a cheaper source?

 

3/4 of an acre. I do have some diazone left over from years ago, just not sure how much strength the stuff looses. I will pay if it can rid me of this. My lawn isnt great, and i just care that its semi green , has no weeds. But I need a lawn for that. lol. I will look onto it. I will look for something similar thats cost effective. And tbh, if I have to apply stuff weekly I will. But acording to all I read what I did should have been effective, but it wasnt. I am wondering if the webworms have imunities. We had some fleas 2 years ago on the cats that nothing killed. Had to take them to the vet. The frontline, and the better stuff did nothing. Eventually had to fog the house twice. And get the fleas off by hand. This is not good.

 

I use Coragen which is a cheaper version of Acelepryn which I believe the the AI is chlorantraniliprole.

I use the 4oz per acre rate and it is systemic and will handle pretty much all worm activity. The label says apply and dont water or mow for 24 hours. I usually get a rain shower after applying but it still works. In the SE you have to apply every 2 months for full control, but probably less in the NE.

 

Same area less then 1 day later. Lol. I ordered a gallon of biffen lp and will pick up some granuals from lows. Will try that next week when it arrives. Then do it again next year. Next year I will use what you guys recomend. And hopefully, the diffrent pesticides will kill them.

 

At 1k a gallon it is pricey, the Coragen, it may be easier and cheaper to get my hands on some DDT, lol.

 

Hard to tell from the picture what the moths are, too blurry, but the damage I am seeing in the pictures is Not from webworms. Webworms feed on the blades of the grass, it would look like the lawn was scalped from mowing, but what I am seeing in the pictures, the blades are there, but turning brown, if that is correct, it is Not webworms but some other problem. Also for surface insects like the moths (and webworms), once the insecticide is off the surface, from irrigation or rainfall, it will not affect them any longer.

 

No its definitely sod webworms. If you look up the damage, it will look like other pictures. Addtionally, the greatest concentration of moths is around the eaten areas. Yup, it almost looks like drought or sun dammaged grass. But it isnt. My guess is they eat their way down and feast closer to the root of the grass blade. But its their and thats them. I have some surface granuals I will put down now. And follow it up with whatever liquid I have in the garage, I may use the conqure, as the premetiem is almost gone. When I say moths, thier are a plethora of them. Not just a few, 100s if not thousands.

 

At 1k a gallon it is pricey, the Coragen, it may be easier and cheaper to get my hands on some DDT, lol.

You dont have to buy a gallon. There are much smaller quantities available. Also a little goes a long way. 4oz per acre for army worms and sod webworms. For grubs you use 8oz per acre.

Also Coragen is systemic, a single treatment will last months.

 

There is no need to apply anything now as the webworm larvae eating of the grass is done.

once the insecticide is off the surface

Does this include systemic insecticides?

 

There is no need to apply anything now as the webworm larvae eating of the grass is done.



Does this include systemic insecticides?

I had a bad grub issue last October so they stay in the lawn but don’t eat grass this time of year?

 

I thought the permetiam (tenguard) was supost to last a bit. I will agree then are probably mostly done eating as they are moths, but in case they are some more ready to emerge , I want to kill them. Plus if it kills the moths before they lay some of the eggs, It will be less to deal with next year.

 

Do you mean Permethrin? it does have some residual. Bifenthrin is better.

From the Perm 10 datasheet (Martins)
Thoroughly wet down grass a few hours before applying. Home lawns should be no taller than 3 inches at time of application. Slightly more water may be used as long as the amount of product per area is as listed below. For heavy infestations, repeat application after 2 weeks use 1 1/2 fl. ozs. in 10 gals. of water to cover 1,000 sq. ft.

Was it applied correctly?

 

Yes. I dit it at a slightly heavier concentration. And folloqed that with the granuals specricide. That worked for a month. So, just did the Bifenthrin armco ? Granuals. Now waiting to apply a liquid. Probably early next week.

 

Ok so I think the granuals did keep it in check. For now. I think maybe next year I have to start early spring and reapply diffrent pesdicides every month or more. At least I am retired now. So I will have the time. Also, just a thing with the liquid stuff, its hard to know exactly how much product you put down. Doing a 3/4 acher with a dial a sprayer and trying to get the amounts down evenly isnt the easiest.

 

Buy a sprayer. Or chlorantraniliprole is available in granular. Amazon.com : Scotts GrubEx1 - White Grub Killer, Sod Webworms and Larvae of Japanese Beetles & More, Lawn Treatment for Season Long Grub Control, Treats up to 10,000 sq. ft., 28.7 lb. @ The following redundant information [grub,3][lawn,2] should be removed : Home Pest Repellents : Patio, Lawn & Garden

You might only need the chlorantraniliprole

 

Ok , so me 0 lawn moths 10. I might as well be feening them instead of poisoning them. I will follow up tomorrow or tonight with a liquid, the granular stuff I spread did nothing.

 

Its hard to see but they are all over the place. Its hard to get pictures. I think the grinding noise is the headphone music. Lol. Its not me scalping the lawn with the blades.

 

Have not seen any moths in my area for 2 weeks. That is why i thought to worry about it next year. It is the larvae you need to kill not the moths.

 

It is the larvae you need to kill not the moths.

24 posts in and someone finally said it.

 

granular stuff

What did you apply?

 

An argo? granual , it had a bifenthrin as the pestiside. I put it down heavier then the recomended for the webworms. Supost to work in 24 hrs, aperently dosen't kill in between stages, or ecen the webworm. Lawn damage is almost double the area now , just spread out more. Will do the liquid tomorrow, hope to knock out some moths before they lay more eggs. And any reamining webworms.