Mosquito Dunk, 2-Pk.
Best eco-friendly solution for homeowners managing standing water and mosquito populations.
Control mosquito larvae effectively and safely with Summit Mosquito Dunks. These dunks utilize a natural bacterium, Bti, which targets only mosquito larvae, ensuring safety for animals, plants, and beneficial insects. Approved for organic gardening, they float on standing water and provide over 30 days of continuous protection. Ideal for rain barrels, bird baths, ponds, and animal watering troughs, they prevent mosquitoes from maturing into biting adults, offering a simple and eco-friendly solution for your outdoor spaces.
$8.99
Owner Satisfaction
4.6
/ 5
Category Rank
32
/ 291
#32 in Lawn & Garden
Price vs Category Average
-72%
Below average
Active Ingredient
Bacillus thuringiensis subspecies israelensis (Bti)
/ Bacillus thuringiensis subspecies israelensis (Bti)
Who it's for
- Pet owners and gardeners prioritizing safe, eco-friendly pest control
- Busy homeowners wanting low-maintenance, long-term mosquito prevention
- Property owners managing diverse standing water sources
Who should skip it
- People needing immediate relief from active, biting adult mosquitoes
- Design-conscious decorators maintaining pristine, visible water features
- Residents dealing with flowing water or dry pest breeding grounds
Performance breakdown
Application Simplicity
Drop it in the water and walk away with zero effort.
Ecological Safety
Bti formula protects pets and wildlife while targeting only mosquito larvae.
Treatment Longevity
One dunk provides over a month of continuous, reliable water protection.
Organic Compliance
Fully approved for organic gardening and sustainable outdoor maintenance routines.
Targeted Efficacy
Prevents larvae from maturing into biting adults with high biological precision.
Versatility
Adapts perfectly to rain barrels, bird baths, and small garden ponds.
Key Specs
Active Ingredient
Bacillus thuringiensis subspecies israelensis (Bti)
Coverage
100 sq ft of water surface per dunk
Duration
30 days or more per dunk
Form
Floating donut-shaped briquette
Application
Place in standing water
Features
- Kills mosquito larvae naturally
- Provides 30+ days of protection
- Safe for pets and wildlife
- Approved for organic production
- Floats for continuous treatment
- Treats up to 100 sq ft
- No mixing required
- Prevents biting mosquitoes
What customers say
Customers overwhelmingly value the Summit Mosquito Dunks for their effectiveness and safety. The BTI ingredient provides rapid, targeted control against mosquito larvae in various water sources. A key benefit noted by reviewers is the excellent safety profile; the Dunks are non-toxic to pets, fish, and wildlife, making them a preferred alternative to harsh chemicals. Users confirm a significant reduction in adult mosquito populations quickly after application, highlighting the product's reliable preventative power and ease of use. While minor concerns exist regarding the physical durability of the dunks, the overall consensus positions this product as an essential, trustworthy tool for safe, localized mosquito management, offering great value.
Know before you buy
Yes. The active ingredient, Bti, is a naturally occurring bacterium that specifically targets mosquito larvae and is non-toxic to pets, birds, fish, and other wildlife.
A single Mosquito Dunk is sufficient for most rain barrels. Each dunk is designed to treat up to 100 square feet of water surface area, regardless of the water's depth.
No mixing or submerging is required. Simply place the donut-shaped briquette on the surface of the standing water, and it will float while slowly releasing the active ingredient.
Each dunk provides at least 30 days of continuous protection. You should replace them once a month during the mosquito season to ensure ongoing control.
No, Mosquito Dunks only target mosquito larvae in the water. They prevent the larvae from maturing into biting adults, which helps reduce the overall population in your yard over time.
Yes, they are safe for use in ponds with fish, plants, and beneficial insects. The Bti bacterium is highly selective and does not harm non-target organisms.
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Ask Hayley anything about this product before you decide.
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$9