Mosquito Dunks
Best eco-friendly solution for homeowners managing standing water and mosquito larvae.
Take control of mosquito populations with Mosquito Dunks, the leading homeowner solution for eliminating larvae in standing water. Utilizing BTI, a naturally occurring bacterium, these dunks target only mosquito larvae, ensuring safety for pets, fish, wildlife, and humans. Each dunk provides over 30 days of effective, low-impact control, treating up to 100 square feet of water. Approved for organic gardening by the EPA, simply place them in water gardens or any stagnant water source to prevent mosquitoes before they can bite.
$14.27
Owner Satisfaction
4.7
/ 5
Category Rank
23
/ 1717
#23 in Pesticides
Price vs Category Average
-68%
Below average
Active Ingredient
BTI (Bacillus thuringiensis israelensis)
/ BTI (Bacillus thuringiensis israelensis)
Who it's for
- Eco-conscious homeowners protecting pets and local wildlife
- Busy gardeners needing long-lasting, low-maintenance mosquito prevention
- Property owners seeking simple solutions for standing water sources
Who should skip it
- People needing immediate relief from existing adult mosquito swarms
- Homeowners managing streams or fountains with strong water circulation
- Aesthetic-focused gardeners bothered by chalky residue in water features
Performance breakdown
Larval Efficacy
BTI bacteria provides highly targeted, lethal control against mosquito larvae.
Safety Profile
Non-toxic formula ensures complete safety for pets, fish, and wildlife.
Ease of Application
Simply drop a dunk into standing water for effortless, set-and-forget protection.
Treatment Longevity
Thirty days of continuous protection minimizes the need for frequent maintenance.
Environmental Impact
Organic-approved ingredients offer a low-impact alternative to harsh chemical pesticides.
Coverage Efficiency
Each unit effectively treats 100 square feet of stagnant water surface.
Key Specs
Active Ingredient
BTI (Bacillus thuringiensis israelensis)
Quantity
20 Dunks per package
Duration of Control
Lasts 30 days or more
Coverage Per Unit
Treats 100 square feet of surface water
Application Method
Apply to any standing water or water garden
Formulation Type
BTI (Bacillus thuringiensis israelensis)
EPA Registration Number
6218-47
Features
- Kills mosquito larvae before they bite
- Contains safe, natural BTI bacteria
- Safe for pets, fish, and wildlife
- Provides 30+ days of control
- Approved for organic gardening
- Easy to use in standing water
- Treats 100 sq ft per dunk
- Low-impact mosquito control
What customers say
Customers overwhelmingly praise Mosquito Dunks for their exceptional reliability and straightforward ease of use. Users consistently report that dropping the dunks into standing water quickly and effectively eliminates mosquito larvae, often noticing results within 24 hours. This product is celebrated as a highly effective, long lasting solution for yard control, making it a staple for managing water features and drainage areas. The simple application process requires no special tools or mixing, reinforcing its reputation as a dependable and valuable preventative measure.
Know before you buy
Mosquito Dunks contain BTI, a naturally occurring bacterium that specifically targets mosquito larvae. When larvae ingest the bacteria, it disrupts their digestive system, killing them before they can mature into biting adults.
Yes. Because BTI is highly selective, it only affects mosquito larvae and is completely safe for fish, pets, wildlife, and humans. It will not harm your aquatic plants or beneficial insects.
Each individual dunk treats up to 100 square feet of surface water. For smaller containers like birdbaths or rain barrels, you can break a dunk into smaller pieces to treat the area effectively.
You do not need to remove the dunk, as it will eventually break down. However, for continuous protection, you should replace the dunk every 30 days or sooner if the water is flowing or if the previous dunk has fully dissolved.
Yes, Mosquito Dunks are approved for organic gardening by the EPA. The BTI bacteria are non-toxic and will not negatively impact your soil or produce.
Still have a question?
Ask Hayley anything about this product before you decide.