Control Invasive Zebra Mussels and Quagga Mussels without damaging chemicals.

home_zqZequanox® is the industry’s only selective and environmentally compatible molluscicide for the control of invasive zebra and quagga mussels (Dreissena species) at all stages of maturity—from veliger to adult. Zequanox delivers efficacy comparable to chemical solutions, but does not endanger employees, damage equipment, or result in harmful impacts to the environment or other aquatic organisms1 when used as directed.

Ideal for use in open water, closed water systems and golf courses, see below for more information on each use.

1Extensive toxicology studies have been conducted with Zequanox®. At application rates that produced high zebra and quagga mussel mortality (76%–100%), no bacteria-induced mortality was recorded among any of the nontargets, including fish, ciliates, daphnids, and bivalves.

Zequanox In Action

Invasive Zebra Mussel Ingesting Zequanox

Zequanox Applications

Safely protect lakes, rivers, reservoirs and other open bodies of water from invasive zebra and quagga mussels. Zequanox is a biological control solution that’s an environmentally friendly alternative to potash or copper-based products. It does not harm humans, animals, aquatic life or the ecosystem.

Invasive mussel concerns:

  • Negative impact on native mussel populations
  • Disruption of the natural ecosystem
  • Proliferation of toxic blue-green algae
  • Decreased game fish populations
  • Increased risk of injury for swimmers from mussels’ sharp shells
  • Impeded or blocked flow lines for water intakes from infested lakes and rivers used for irrigation, fire suppression and drinking water
  • Decreased lakefront property values
  • Loss of revenue from closed reservoirs and reduced recreation
  • Costly to remove or manage infestations

When a golf course draws water from a mussel-infested water body it runs the risk that mussels will colonize in the irrigation system. The resulting maintenance costs associated with established mussel populations and shell debris can be significant and involve replacing and repairing clogged sprinkler heads, removing shell debris from greens, and worse, replacing clogged irrigation lines.

Zequanox offers effective biological control with efficacy on par to chemical solutions:

  • Non-toxic and chemical free, posing no risk to players or employees
  • Safe for turf applications during germination and on mature turf; won’t cause discoloration
  • No wait time after application (0-hour reentry interval) means no disruptions to play
  • Doesn’t impact normal irrigation timing; treatments are performed over several hours and can be timed to coincide with normal irrigation operations

Zequanox users can have confidence that they are protecting against mussel damage without having to procure and maintain costly, specialized equipment or incur the risk of an accidental chemical spill or worker injury.

Use Zequanox for biological control that delivers efficacy comparable to chemical solutions:

  • Effective in a broad range of temperatures and conditions
  • Not subject to regulatory restrictions on usage and carries minimal permit requirements
  • Noncorrosive to equipment and does not require detoxification before water discharge
  • Unlike mechanical solutions, Zequanox can be employed quickly with no special equipment required

Benefits of Zequanox

Highly selective

Highly selective

Mussels readily consume the product, which is composed of the dead cells of a naturally occurring microbe
  • Once ingested, Zequanox deteriorates the mussel’s digestive lining causing death
  • Product controls all mussel life stages
  • Effective in broad range of water temperatures and conditions
  • Extensive toxicology studies demonstrate Zequanox is highly selective toward zebra and quagga mussels (Dreissena species) and is safe for many aquatic species, including fish, native freshwater unionids, plants, algae, crustaceans, and insects, as well as, mallard ducks
Easy treatments

Easy treatments

Effective control by direct application in the water system
  • Product can be applied using standard injection equipment
  • Unlike mechanical solutions, there is no need for costly capital investments or complicated install and maintenance
  • Zequanox is noncorrosive, nonvolatile and does not require detoxification before water discharge
  • As a water treatment product, Zequanox reaches even the smallest crevices where mussels may colonize
Application flexibility

Application flexibility

Significant advantages over chlorine and chemical options
  • EPA approved and classified as a reduced-risk aquatic pesticide
  • Zequanox is not subject to regulatory restrictions on usage, such as time of year and treatment frequency, and carries only minimal permit requirements
  • Treatments can be complete in just hours, and can occur during the workday without disrupting normal operations
  • Worker-friendly with minimal personal protective equipment (PPE) requirements

FAQs

About ZEQUANOX®

Zequanox is a naturally derived, aquatic biopesticide shown to be effective in controlling invasive zebra and quagga mussels.

Zequanox is made from a naturally occurring strain of the bacteria Psuedomonas fluorescens (Pf) (CL145A). Pf is one of the most common soil bacteria in the world and is known to protect the roots of plants from disease.

Zebra and quagga mussels readily ingest Zequanox as a food source. Once ingested, Zequanox deteriorates the lining of the mussels’ digestive systems causing the mussels to die.

In general, Pseudomonas fluorescens is an abundant and natural component of the microbial flora of soil, water and plants.

In recent years, Pseudomonas fluorescens species have been used in many applications, including pharmaceutical production, snow making, frost protection for strawberries and disease protection for apples.

No, the specific microbial strain that Zequanox is made from is naturally occurring and was discovered in river soil in the Northeastern United States.

Because of Zequanox’s complex mode of action, development of pesticide resistance by zebra and quagga mussels is of minimal concern.

Product Registration and Safety

Zequanox is a naturally derived, aquatic biopesticide shown to be effective in controlling invasive zebra and quagga mussels.

The active ingredient of Zequanox, Pseudomonas fluorescens, is already present naturally in soil, in water, and on plants, making it a natural part of the human diet. It has negligible effects on drinking water and can be used as a method of mussel control at water treatment facilities.

Yes, water treated with Zequanox may be used to irrigate crops, for fishing, or any other uses that may result in food, feed, or drinking water contact. Zequanox is food tolerance exempt (no maximum residue limit).

Yes, Zequanox is been determined to be exempt from requirement of a food tolerance under the Federal Food Drug and Cosmetic Act. The EPA and FDA have reviewed Zequanox uses in the manufacture of food-grade and food-contact materials and equipment and have concurred that the existing tolerance exemption for Zequanox covers food-grade and food-contact material uses.

No, specific to Zequanox, the Pseudomonas fluorescens species used has been tested extensively to determine its safety for human health and the environment. These studies provide confirmation that Zequanox is not a human pathogen and is not infectious to humans.

Pseudomonas fluorescens (the active ingredient in Zequanox) has been designated as “Biosafety Level 1” by the American Type Culture Collection and the American Biological Safety Association, defining Pseudomonas fluorescens as “having no known potential to cause disease in humans or animals.” US and international health and safety regulators consider Pseudomonas fluorescens species to be of the lowest possible risk to human health and the environment.

No, waters treated with Zequanox may be used continuously for recreation purposes, including body-contact activities such as swimming. There is no (zero hours) re-entry interval (REI).

In addition, waters treated with Zequanox may be used continuously for fishing and fish caught in these waters may be consumed. Zequanox is approved for food uses and is exempt from the requirement of a tolerance for residues in and on all food commodities. Additionally, the EPA rule establishing the exemption for a requirement of a tolerance for the active ingredient in Zequanox states: “Pseudomonas fluorescens is already present naturally in soil, in water and on plants, thereby making it part of the normal human diet.”

No, Zequanox is highly selective and only affects invasive zebra and quagga mussels.

No, when used as directed. Zequanox has proven to be safe for non-target aquatic species. Extensive toxicology studies have been conducted with Zequanox. The findings demonstrate that at application rates that produced high zebra and quagga mussel mortality, no bacteria-induced mortality was recorded among any of the nontargets, including fish, insects, crustaceans, plants, and algae.

Pseudomonas fluorescens (the active ingredient in Zequanox) has been designated as “Biosafety Level 1” by the American Type Culture Collection and the American Biological Safety Association, defining Pseudomonas fluorescens as “having no known potential to cause disease in humans or animals.” US and international health and safety regulators consider Pseudomonas fluorescens species to be of the lowest possible risk to human health and the environment.

As with all pesticides and biopesticides, always read and follow directions on the label.

No, Zequanox is composed of only dead (i.e., non viable) Pseudomonas fluorescens cells. Therefore there it is not possible for the bacteria cells in Zequanox to reproduce and/or mutate.

No, Zequanox is a non-corrosive material and will not have any negative effects on boat surfaces or mechanics.

Product Use

Zequanox arrives as a powder, is mixed with water on-site, and is injected using standard chemical application equipment. No specialized equipment is required for Zequanox applications.

Personal protective equipment (PPE) should be worn when working with any type of pesticide. PPE requirements for ZEQUANOX®are minimal (i.e., gloves and long sleeves). Refer to the product label found at www.marronebio.com for application instructions.

No, because Zequanox is composed of dead bacterial cells, it degrades very quickly in the environment with no lasting effect on water quality.

Yes. The U.S. Environmental Protection Agency (EPA) has approved Zequanox for open water use to combat invasive zebra and quagga mussels in lakes, rivers, recreation areas and other open bodies of water.  For additional information email zequanox@marronebio.com.