How do I get rid of Night Crawlers from my yard?

Lindy Ellenbaum
by Lindy Ellenbaum
Night Crawlers are causing large bumps in my yard, making it almost impossible to walk on the grass. Picking them after a rain only gets a few, the chemical advertised as a worm killer admits it is only 30% effective,, I am at a loss as how to rid my yard of worms that are not native to our soil.

  14 answers
  • 1ka24810872 1ka24810872 on Jun 30, 2017

    Wonderful for fishing...might sell them. Hate for you to kill them, would love to have them to go fishing.

  • 2dogal 2dogal on Jun 30, 2017

    Are you sure it's the night crawlers causing the bumps?

    They are so good for aerating the soil and their casings add nutrients. I'd live with it.

  • Karen Skinner Karen Skinner on Jun 30, 2017

    I agree they also aerate your lawn which is good. I never heard of them up so high. Are you watering too much?

    • Lindy Ellenbaum Lindy Ellenbaum on Jul 02, 2017

      Karen,, we have been getting a lot of rain, and they surface at night after and during the rain,, leaving behind a small clump of dirt when they retreat. I know they are Night Crawlers because I have picked them but I will never be able to eliminate them without a new method,, they are not your garden variety of worm these guys are much larger, great for fishing .

  • Barbara Baldwin Barbara Baldwin on Jun 30, 2017

    Wouldn't it be funny if what was thought to be nightcrawlers were voles or moles instead? Please keep us informed because I have NEVER heard of worms so large they trip you...

    • See 1 previous
    • Linda Louise Payeur Linda Louise Payeur on Apr 30, 2020

      Yes. I know what you're talking about. Sometimes referred to as dew worms here in Canada. They destroy lawns. Dethatching, aerating and spreading a layer of sharp sand is supposed to be helpful. They can make far worse damage than even moles and voles.

  • Cori Widen Cori Widen on Jun 30, 2017

    Could it be moles?

    • Lindy Ellenbaum Lindy Ellenbaum on Jul 02, 2017

      I almost wish it were so, but no they are Night Crawlers. not your garden variety of worm,, these guys are large and are a problem,, I pick them now and then after a rain but they breed like rabbits and there is no end to this in site.

  • Nancy Wilson Nancy Wilson on Jun 30, 2017

    It sounds like you have voles....small mole-like creatures that tunnel in the ground and create havoc with the lawn. If the bumps are larger you may actually have moles or groundhogs. Worms don't cause that kind of disturbance.....they make little holes to aerate the soil. The other possibility is snakes.

    • Lindy Ellenbaum Lindy Ellenbaum on Jul 02, 2017

      Nancy these are not your garden variety of worm these are Night Crawlers, quite a bit larger than worms, 1/4" in dia. and up to 10" long. Great for fishing but I cant catch them all and they multiply like rabbits.

  • Lindy Ellenbaum Lindy Ellenbaum on Jul 02, 2017

    Night Crawlers are not your Garden variety of worm, these are much larger, and when they surface leave a pile of dirt which when dry hardens into clumps about the size of a large marble. I know they are Night Crawlers because I have picked them after a rain. They only surface in the dark and you must use a light with a red lens in order to capture them and you have to be quick because they can and do retreat so fast. I am looking for a way to delete them but it seams no one has the answer to my problem so I will continue to capture them but they multiply like rabbits so with out another way of eliminating them, my problem is going to be one I suspect i may have to live with.

  • Barbara Baldwin Barbara Baldwin on Jul 02, 2017

    Do you know how much work casings cost...these little guys are supplying for free..

  • Susan Carr Susan Carr on Apr 29, 2020

    Anyone who asks if they might be moles or voles...I can only respond by saying, then you haven't had a night crawler problem... I have them too and they're killing my lawn by leaving castings, mounds of soil like stuff that suffocates the grass underneath. They are not voles or moles! I have so many that my once beautiful lawn is full of dead areas, and lumps and bumps, that makes mowing difficult. I too want to rid my lawn of this nuisance.

  • Susan Carr Susan Carr on Apr 30, 2020

    In case some readers don't believe the damage they can do...this is a picture of my once luscious bluegrass lawn. Little by little this is what happens when you have too many night crawlers. It should be apparent that these holes are formed by night crawlers coming to the surface at night. I raked the castings away from the holes.

  • Jill Johnke Jill Johnke on May 19, 2020

    I’m having this same problem! And I’ve seen them out at night after a rain! My dogs were trying to get them! My yard is horrible and hard to mow because it’s so bumpy

  • Pat Pat on May 19, 2020

    I know what you are saying .. my DML had so many night crawlers in her yard, it was very bumpy and I had to mow her lawn. Horrible! She moved and am sure the next person had the same problem. We have had moles and voles in our yard.....A lot different.

  • George George on Jun 28, 2020

    I also am looking for answers to get rid of night crawlers. In the last year they have really taken over my lawn. Hurts to walk on it and to mow is like a teeth chattering experience. The once pretty lawn is now about dead. We fertilize and seed ever spring and fall and it doesn't help any more.