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How to Eliminate Crawfish from the Lawn Fast

October 14, 2019 by Amy 22 Comments

Crawfish, better known as crayfish, are lobster-like crustaceans that live in freshwater. Their colonies also thrive in ponds, paddy fields, and ditches. Woe unto you if you live in a marshy area because the crawfish might gatecrash your party.

The Center of Attraction

Crayfish are a nuisance. They burrow into lawns during the rainy season, thus hurting the landscape. With over three hundred mudbug species available, eliminating them becomes an uphill task. The most common types include the:

  • Digger crayfish
  • Devil crayfish
  • Tasmanian giant crayfish

But what attracts them to your garden? Water puddles might be your biggest problem. They are a magnet for crawfish mounds because they provide the right conditions for habitation. 

Besides, the ponds are perfect food reservoirs, given they hold algae and other plant material in place. The colonies, if uncontrolled, cause a persisting problem on your lawn. Mitigation efforts are, therefore, vital in the fight against a crayfish invasion. 

how to get rid of crawfish in your yard

Things You Must Do

These crustaceans are perfect home delicacies. They can, however, turn into a nightmare when they invade your property unannounced. But how do you control their numbers without hurting them?

Well, this guide will teach you how to get rid of crawfish in your lawn in the following steps. 

1. Bait Them

Crawdads make your garden unsightly. They even affect the landscape, forcing you to spend hundreds of dollars in refurbishment efforts. But do you have to endure such pains every other rainy season? It’s simple.

Setting metal crawfish traps in designated zones might save you a penny. The traps filled with chicken bait catch the crawfish alive. You can then eat them or throw them in a distant freshwater lake. Heck, you can even open a crawfish museum and make some money from your predicament.

2. Pour Lye into the Burrows

Have you exhausted all other crawfish elimination options? If so, consider using the lye to advance your agenda. Lye is a sodium hydroxide compound that eliminates crawfish colonies when poured into burrows. 

You must, however, use a tablespoon amount per mound. Also, handle the compound with care and keep it away from dogs because of its caustic nature. But overall, lye is harmless when used on the soil. 

how to get rid of crawfish mounds in your yard

3. Use Soapy Water

Did you know that dawn dish soap can chase the crawfish away? The detergent, when mixed with water, kills the grub the crawdads eat. Destroying the food reserves, therefore, forces the “guests” to abandon ship when it matters.

Also, soapy waters do not harm ecosystems, making them eco-friendly. 

4. Add Crayfish Repellents Into the Mounds

Crayfish repellents are costlier than other home remedies but might be perfect for eliminating crawdads from your lawn. The food-based products, whether in granular or spray form, alter the soils’ composition making it inhabitable.

Crawfish then migrate to other locations leaving your space open to refurbishment. You must, anyhow, reapply the powder often to keep the irritants at bay. Voice and gas options are also available. 

5. Build Barriers Around the Premise

Mudbugs use the route of least resistance. Erecting barriers, therefore, limits crustacean numbers in the lawn. You can then deal with the remnants by employing any of the above techniques.

Walls, however, do not make your home full-proof.

6. Flatten the Castles

Mound demolition is one of the most effective ways of dealing with crawfish numbers. The process makes the colony inaccessible. But that is not all you must do.

You need to apply natural deterrents on the entrances and exits to prevent the gutsy builders from reclaiming their property.

how do you get rid of crawfish mounds in your yard

7. Landscape Lawn Again

As you now know, crayfish habitate small pools and puddles. It is, therefore, vital that you resculpture the land to prevent surface runoff from forming crawfish ponds. Doing so also improves lawn aesthetics.

Conclusion

There are over three hundred crawfish species known to man. However, burrowing crayfish are the most notorious for attacking kitchen gardens and backyards. Their numbers increase during the rainy season and in their wake, cause a lot of destruction. 

If unchecked, the crawfish population might grind your life to a halt. Moreover, it might put your life in jeopardy by attracting scavengers. Extermination is, thus, the only viable solution to ending the menace. 

So, how do you control mudbug numbers without harming them? One, you can set up barriers when it is dry to prevent the bugs from burrowing into your property during the rainy season. Second, you can apply DIY solutions to curb the menace. Last, you can use manufactured products to repel crayfish from their colonies. It all depends on preference. 

But all things considered, you must choose eco-friendly solutions over poison-injection techniques. Recall, organic methods prevent you from contaminating groundwater sources, something that has a ripple effect on you and other animals.

Above all, biological technologies are inexpensive and do not take long to set up. 

Filed Under: Lawn & Garden

Comments

  1. Cathy de la Garza says

    March 28, 2020 at 6:11 pm

    Thanks for the help. I have 3 acres of these bastards to deal with.

    Reply
    • Dawn Bolyard says

      September 5, 2020 at 10:14 pm

      Hi Cathy, did you try any/all of these options? If so what do you feel worked best?

      Reply
    • Katskan says

      March 1, 2021 at 10:15 am

      I have 8 acres & cut 4 of it..
      I feel your pain.
      I live in S/E Louisiana ?

      Reply
    • Josue says

      April 18, 2021 at 10:58 pm

      Have you deal with it? What did you apply to them, what results did you get?
      Thank you

      Reply
    • Terry Holmes says

      April 25, 2021 at 4:56 am

      Hello Cathy,
      Did the Dawn detergent work on the crawdads? I’ve been trying to get rid of them on my lot for years…
      tried everything…no luck.
      I hope you and Danny are doing well.
      Finding you like this was a real surprise.
      Lyondell is fading fast in my memory.

      Thanks for the memories,
      Terry

      Do ya need any more dog’s shipped from England?

      Reply
  2. Janice cook says

    June 17, 2020 at 10:32 pm

    Killing off native creatures for a lawn!! Our vales are distorted

    Reply
    • Ax says

      July 14, 2020 at 11:27 pm

      Then you live with them!! I cannot now my lawn because the burrows are so high above the ground! I’ll trap them. Send me your address and I’ll ship them to you for free!!???

      Reply
      • Audrey says

        March 31, 2021 at 3:10 am

        Agree!

        Reply
      • Shirley says

        May 30, 2021 at 5:25 am

        Great reply!

        Reply
    • TJ says

      March 22, 2021 at 8:59 pm

      Hey Janice,
      How bout you come over and suck the crawfish out of my yard????

      Reply
  3. Ashley says

    August 14, 2020 at 10:45 pm

    Hey Amy! There is drainage runoff I’m our backyard and recently saw we have crawfish! I poured 1-2 tablespoons on granulated lye into their holes. Do I need to follow up with water so it is effective? Thanks!!

    Reply
    • Donna says

      May 8, 2021 at 1:08 pm

      Ashley please tell me if this worked for you! Did you put the dry granules only or did you add water? Thanks for any help!

      Reply
    • Will says

      July 8, 2021 at 4:14 pm

      Hi Ashley. How did this work out for you? Have a similar situation. Thanks.

      Reply
  4. Cgarsee says

    April 14, 2021 at 6:17 pm

    Do you put lye in every hole??

    Reply
  5. Craw says

    April 17, 2021 at 12:58 am

    “Crawfish Museum”?!?!)!

    Seriously?!?!?!

    Reply
  6. Cathy says

    May 1, 2021 at 1:48 pm

    I have the same question concerning lye. Do you need to follow it with water?

    Reply
  7. Patti says

    July 28, 2021 at 3:34 pm

    How much Dawn mixed with how much water?

    Reply
  8. Daryl Messenger says

    August 17, 2021 at 10:20 am

    I recently discovered I have literally hundreds of the mounds and holes on my pond dam. i was told they are crayfish holes. Is my dam at risk because of these? If i set traps, how do I keep the other creatures from the traps due to the bait? I also have these in my flower beds near the house which is high and dry.

    Reply
  9. kenneth prather says

    August 24, 2021 at 3:25 pm

    crawfish are digging holes about a foot away from edge of my pond causing banks to cave in. what do you suggest ?

    Reply
  10. Holly says

    October 22, 2021 at 5:54 pm

    Hi everyone I have 3 acers with crayfish on it, my new pony will be moving in soon how do I get this don Quick so we dont have a broken leg with the mounds and holes they leave

    Reply
  11. william robertson says

    February 22, 2023 at 11:29 pm

    does the lye kill the grass around the holes ? do i chose crawfish or denuded lawn?

    Reply
  12. kay conklin says

    April 17, 2023 at 8:05 pm

    what amounts of dish soap and water to mix to pour down holes of the crawdads?

    Reply

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