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Japanese beetle / Grubs #927509

Asked April 04, 2026, 1:47 PM EDT

I am having trouble with grubs in my lawn and japanese beetles during the fall. I do not want to use chemicals as I have many flower and vegetable gardens. I only have a 1/4 acre of land and am within walking distance to the city. So homes are close together and not much forest land. Something has dug up my front yard and working on my back yard. I do not see any of the neighbors yards being dug up like mine. I'm getting confusing information about what to use and not to use. Should I use Milky spore or traps? Please any help is appreciated.

Strafford County New Hampshire

Expert Response

Hello Sue,

Thank you for reaching out to the UNH Extension Infoline. The following UNH website discusses grubs and their control quite extensively and should be helpful. You can find it at :https://extension.unh.edu/blog/2019/09/how-do-i-treat-grubs-my-lawn

In addition, UNH has a video about grubs and their control: https://extension.unh.edu/resource/grub-control-video

UMASS Amherst also has a paper on grubs and other insects along with their control. It can be found at : https://www.umass.edu/agriculture-food-environment/turf/fact-sheets/current-insecticide-approaches-for-white-grub-control

I hope this information is helpful! Please feel free to reach out with any further questions!

Thank you for contacting the Infoline, a service of the UNH Cooperative Extension. Replied April 06, 2026, 9:55 AM EDT

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