Bleach isn't good.
I wouldn't use it.
Get a some yellow fly traps or some SM-90...or lady bugs.
I use praying Mantis's and lady bugs.
Jdog7000 Reviewed by Jdog7000 on . bleach? a dude told me last night to use bleach and baking soda.... diluted with water to uh.... kill gnats......... will it kill the gnats or the plants???? Rating: 5