AquaBac®

Product Details

Why Public Health Programs Choose AquaBac®

A Flexible, Single Brood Option for Sensitive Areas and All Environments

AquaBac® is formulated with Bti, a biodegradable active ingredient that’s highly specific to mosquito, fly, and midge larvae rather than beneficial insects, fish, birds, or mammals. This favorable environmental profile lends itself for use in areas such as schools, parks, protected wildlife habitats, drinking water sources, federal and state managed lands, and residential neighborhoods. For communities requiring organic options, AquaBac® 200G is OMRI® Listed and approved for organic programs.

AquaBac® is a flexible, single brood option for sensitive areas and challenging environments where programs need a one-hit or more flexible application.

An Active Ingredient Trusted and Preferred by Communities

Bti has been used safely worldwide for decades and is widely accepted by the public, environmental groups, and regulatory agencies. Extensive field experience and scientific research have consistently demonstrated Bti’s safety profile, leading to its approval for use broadly, including in drinking water sources, and sensitive ecological areas. This track record of safe, effective use makes AquaBac® a preferred choice for programs that must balance mosquito control needs with environmental responsibility and community concerns.

Proven Efficacy for Over Three Decades and Natural Resistance Management

Clarke takes product performance seriously. Our Research, Development & Engineering team has conducted extensive testing to validate AquaBac®’s effectiveness, with results demonstrating it meets – and sometimes exceeds – performance standards for Bti-based larvicides.

Laboratory Studies

Clarke’s lab studies showed the AquaBac® 200G and XT formulations achieved mortality rates exceeding 95% within 48 hours against Aedes and Anopheles mosquitoes – results nearly identical to comparable Bti products on the market.

Field Performance

Real-world field trials using backpack sprayers to apply AquaBac® WDG against Aedes mosquitoes confirmed strong performance. Both AquaBac® and comparable products performed well, with AquaBac® actually demonstrating significantly better coverage at application swaths of 10, 25, and 30 feet.

Natural Resistance Management

Bti-based products like AquaBac® naturally help prevent insecticide resistance due to their unique multi-toxin mode of action. Mosquitoes have not developed widespread resistance to Bti in over thirty years of use, making AquaBac® a sustainable long-term solution for your community when rotated with other larvicides.

How AquaBac® Larvicides Works

AquaBac® is formulated with the active ingredient Bacillus thuringiensis subspecies israelensis (Bti), a naturally occurring bacterium that produces proteins that are highly selective for and toxic to mosquito, blackfly, and midge larvae. When larvae ingest water that has been treated with AquaBac®:

1. The Bti proteins bind to specific receptors in the larvae’s gut
2. The gut lining breaks down, and the larvae stops feeding
3. Larvae die before reaching the adult stage
4. The bacterium then breaks down naturally in the environment

This targeted mode of action means AquaBac® is highly specific to its target pests while treated water is safe for people, pets, wildlife, and beneficial insects like bees and butterflies.

Formulation Options for Every Environment and Application

AquaBac® is available in four formulations to fit your program’s specific requirements.

AquaBac® XT (Liquid Concentrate)

Flexible application in standing water, wetlands, storm drains, and retention ponds

Applications:

• Both large-scale and small-area control
• Aerial application for large treatment areas
• Ground equipment for targeted treatments

AquaBac® 200G and 400G (Granules)

Standing water, catch basins, roadside ditches, and hard-to-reach breeding sites

AquaBac® 200G is OMRI® Listed for organic and sustainable programs.

Applications:

• Aerial application over large areas
• Backpack spreaders for ground crews
• Drone deployment for precision targeting

AquaBac® WDG 3000 (Water Dispersible Granules)

Custom mixing and wide-area larviciding programs. Also controls fly and midge larvae.

NOTE: For customers outside of the U.S., this formulation is sold under the name AquaBac® DF 3000. 

Applications:

• Backpack and handheld sprayers
• Ground application equipment

Supporting Your Program’s Success

Choosing AquaBac® means partnering with Clarke, a family-owned company with three generations of expertise in sustainable mosquito management. Our commitment extends beyond the product itself—we provide comprehensive technical support from vector control experts, hands-on application guidance and training, rigorous product stewardship and quality assurance, plus educational resources to help both your staff and community members understand effective mosquito management.

Questions about AquaBac® for your program?

Contact Clarke to discuss how AquaBac® can fit into your integrated mosquito management strategy.