Are mosquito torpedos safe for Koi fish? - Mosquito Control Questions - Mosquito Control Support - Spalding Labs

Are mosquito torpedos safe for Koi fish?

Mosquito Control Support

We have customers ask us all the time if we had anything for mosquitoes and finally the answer is YES. The product is the PreStrike® Mosquito Torpedo® which is a little fish shaped tablet you put in all locations with standing water.
Mosquito Control Questions

Are mosquito torpedos safe for Koi fish?

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We have a fish pond in our backyard. Last year the mosquitos weren't too bad but this year is horrible! I know on the mosquito torpedo page it said it is safe for fish, but I wanted to double check that it is safe specifically for koi. If I kill any of my husbands fish he will be so mad! ;)

Thank you,


Draper, UT 

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  • DeeAnna,

    When checking the MSDS (material safety data sheet), the only 2 species of fish listed as having any ill effects were rainbow trout and bluegill.  Koi nor any other carp species are listed as having ill effects.  We have never had a customer report that the Mosquito Torpedos hurt their fish, and looking through reviews from sites specializing in fish ponds, I could not find any mentioning problems with their fish.  I also found no scientific research mentioning problems with koi or other carp species.  Based on that, I would say the Mosquito Torpedoes should be safe for Koi.

    Thank you,