Is it safe to spray house plants with soapy water to kill soil gnats?

I have a purple heart, spider plant, and Swedish ivy, all of which are outdoors and recently, they have become infested with soil gnats. I have heard that you can kill them by spraying soapy water on them but I am afraid of killing my plants. Any suggestions?

Is it safe to spray house plants with soapy water to kill soil gnats?
yes, just spray the plant with water 1/2 hour later then repeat with soap then water 3 days later
Reply:Soapy water is effective and mostly safe.





Try a google-soapywater/houseplants. Years ago there was a guy on pbs that used a lot of soapy water on plants but I can't remember his name.

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