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How To Use Dish Soap To Banish Mushrooms From Your Lawn
Mushrooms are not harmful to your lawn but may raise concerns about underlying issues and aesthetics. Fortunately, there is a simple solution to help
this issue: dish soap.
Create a mixture by combining 1 to 2 tablespoons of dish soap with 3 gallons of water. Once dissolved, pour the soapy solution over
and around the fungi.
Aerate the soil around the mushrooms before applying the liquid to ensure proper drainage. Within 24 hours, the dish soap mixture will start working to kill off
the unwanted fungi.
For a large colony, it may be necessary to repeat this process. Use a smaller quantity for a few isolated ones, and transfer it to a spray bottle for targeted application. 
In some cases, removing parts of the soil may be required to fully eradicate the mushrooms. Wear gloves to remove the mushrooms and place them in a bag to prevent further spread.