Can Cornstarch Kill Roaches?

15mhhm15
Diamond Post Medal for All Time! 1,298 Posts

September 4, 20170 found this helpful

I don't have any roach problems, but with Google - I was able to find that you'll need equal parts of cornstarch and plaster of Paris and it'll get rid of your roach problems.

Reference: www.dvo.com/.../remedy2.html

There is also a thread on ThriftyFun. Some said Boric Acid works. You can read peoples feedback here: www.thriftyfun.com/tf512822.tip.html

Kathie

October 29, 20170 found this helpful

I used they spray and got rid of a lot. They were in my stove and my microwave too.
After that I cleaned everything in the kitchen with bleach and rinsed the next day. I did not see any for 6 days.

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Then I saw 2 baby ones which I sprayed and killed. Now I have about a dozen bottle caps around filled with a mixture 50/50 baking soda and sugar. No roaches for a week.

 

attosa
Diamond Post Medal for All Time! 1,246 Posts

September 6, 20170 found this helpful

If mixed with Plaster or Paris, yes (also found in my search). I use boric acid that I get from the 99c store. I'd deep clean the entire area then sprinkle some down. If you start with the a dirtyish base, they will return.

Judy
Gold Post Medal for All Time! 677 Posts

October 29, 20170 found this helpful

If you mix it with Plaster of Paris it will.

You can use cornstarch to kill those pesky roaches that invade your home. To create a cornstarch mixture that will kill roaches simply mix equal parts of cornstarch and plaster of Paris together.

clarencecruz001

June 19, 20190 found this helpful

You can use cornstarch to kill those pesky roaches that invade your home. To create a cornstarch mixture that will kill roaches simply mix equal parts of cornstarch and plaster of Paris together. Sprinkle the mixture into cracks and crevices. The cockroaches will then eat the cornstarch and plaster of Paris mixture and will then die.