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Can I pour bleach into standing water (not drinking water) to kill the mosquito larvae that are "already" there? I just want to prevent them turning into adults.
Hardiness Zone: 7a
By marsha from Grafton, VA
You can buy tablets that kill mosquito larvae at a garden center. Just give them a call.
Purchase a couple or few "feeder fish" (e.g. comets or gold fish) at the local pet store, about a quarter a piece usually they love mosquito larvae. Depending on conditions (e.g. the water stays), they can live for years.
When I was in high school, we raised mosquitos and had to draw each stage of development. If you put a thin coating of cooking oil on the surface of the water, it blocks their breathing tubes and they die. Non-toxic and you only need a little oil swished over the surface.
What are you going to use the water for? I had this problem with rainwater I was collecting for the flower beds. I just sprayed Raid into the water. It never hurt my flowers.