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Mosquito Dunks

Item #: 111-5

List price: $27.99

Our price: $19.95 You save $8.04 (29%)

Mosquito Dunks are a safe, non-toxic way to kill mosquitoes. Using a bacteria toxic only to mosquito larvae, they kill mosquitoes within hours and last for 30 days or more. Each package includes 20 Mosquito Dunks and each dunk treats 100 square feet. read more

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Our Price: $19.95


Mosquito Dunks are a highly effective, low impact mosquito killer. It is the only mosquito product that uses BTI, a bacteria deadly to mosquito larvae but harmless to other living things. BTI specifically targets mosquitoes, killing mosquito larvae before they become biting, disease-carrying adults. Mosquito Dunks are safe to use around people, pets, birds, wildlife and fish. Mosquito Dunks have been registered by the EPA for use in animal watering troughs and fish habitats.

Features & Benefits:

  • Package includes 20 Mosquito Dunks
  • One Mosquito Dunk effectively treats 100 square feet of surface water
  • Effective against the larvae of all species of mosquitoes
  • Kills within hours, and lasts for 30 days or more
  • Non-toxic to people, pets, fish, and all other wildlife
  • Labeled for Organic Gardening by the US EPA
  • Meets National Organic Program standards
  • Made in the USA

How To Use:

Simply add a Mosquito Dunk to any standing water, or water garden. It is non-toxic to other organisms in the water. As it slowly dissolves, it releases a bacterium toxic only to mosquito larvae. When larvae hatch in water treated with a Mosquito Dunk, they will begin to eat the BTI, which will kill the larvae before they grow up to be biting adults. It is effective against all species of mosquitoes, including yellow fever mosquito, Aedes aegypti, and lasts for 30 days or more. Each Mosquito Dunk treats up to 100 square feet of surface water.

Place Mosquito Dunks in standing water wherever it accumulates around your home: ponds, gardens, flower pots, bird baths, rain barrels, roof gutters, unused swimming pools and more.

Mosquito Dunks can be stored indefinitely because the dried BTI is not technically living bacteria. Field tests have shown eight-year old Mosquito Dunks to be nearly as effective at killing mosquito larvae as the new product. The best storage condition for Mosquito Dunks is a cool, well-ventilated place.


Provides a non-toxic, safe way to control mosquitos.

100% Satisfaction Guarantee

We want you to be completely satisfied with every purchase you make. If you are in any way dissatisfied with a product you ordered, we'll exchange it, replace it or refund your money within 30 days of purchase. Simply email us the problem, and we'll take care of you. Certain products have extended warranties (up to 50 years!) that are listed on the particular product page. Please call us at 1-888-451-6752 if you need further clarification.

Additional Information

Weight 12.8 oz. (0.80 lbs.)
Dimensions 13.3" x 11.5" x 0.8"
Key Feature Safe, non-toxic biological mosquito control
Effective for 4 to 6 weeks
Origin Made in the U.S.A.

Shipping Information

Shipping Details:
Insured against damage or loss while in transit
This Product Ships To:
US Lower 48
Ships Via:
Fedex, UPS, or USPS

Questions about the Mosquito Dunks

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  • From Cathy at 5/22/13 7:10 PM
    • I see where this says that they are safe to use around pets, but what about horses. We've had a lot of rain this spring, so lots of standing water in their pastures. Also their water troughs. Thanks!
    • Mosquito Dunks are safe for use in pasture water. Mosquito Dunks have been registered by the EPA for use in animal watering troughs.
    • Do you find this question helpful?  Yes  No
  • From Em at 4/29/17 9:09 AM
    • What is the approx shelf life of this product?
    • Mosquito Dunks can be stored indefinitely if they are stored in a dry, ventilated location.
    • Do you find this question helpful?  Yes  No
  • From Ron at 5/23/17 6:32 AM
    • Can I use this in my garden with tomatoes and peppers that are in self watering pots? These pots have a standing pool of water under the soil that mosquitoes love. I am hoping this is safe and does not change the flavor of my vegetables.
    • Our mosquito dunks are labeled for organic gardening, so they will not change the flavor or have an adverse effect on your veggies.
    • Do you find this question helpful?  Yes  No
  • From Jo Parker at 5/26/17 3:58 PM
    • Will it work if I crumble up mosquito dunks and sprinkle them in my flowerbeds? The mosquitos lay eggs in the mulch & when I water, they swarm up! Our area of Texas is pretty hot and dry in the summer, so mulch is a necessity to cut down on watering. Or is there another non-toxic product you'd recommend (I have dogs, frogs, squirrels, birds, etc.)?
    • This will only work in stagnant water, so we recommend using Insect Dust instead to exterminate the mosquitos when they land on the mulch.

      Insect Dust is safe for pets, children and wildlife:
    • Do you find this question helpful?  Yes  No

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  • In business since 2000
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  • Carbon-neutral, Family-owned business that promotes sustainability!
Mosquito Dunks 20-pack Click to Enlarge
Mosquito Dunks 20-pack 

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  • Mosquito Dunks 20-pack
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