May 10, 2021

CSI: Launches the First ZC Products in the United States

Recently, Control Solutions, Inc. launched the first 2 products with a ZC formulation in the US, ProFlex and DuraFlex, for structural, urban and industrial use. The benefits of these combination formulations include quick knockdown, long residual, and immediate availability of the insect growth regulator novaluron.

Pesticides are formulated in different forms based on their intended use, the active ingredients, how long it needs to be effective, or the conditions it will be applied in.  A ZC formulation is a mixed formulation, containing one or more active ingredients, of a CS (capsule suspension) and SC (suspension concentrate).

In the case of CSI’s products, we built a product with three active ingredients that work together to create a powerful product with 3 modes of action.The adulticide (lambda-cyhalothrin or bifenthrin) is encapsulated (CS), pyriproxyfen is also encapsulated and novaluron is free in the formulation (SC). CSI created this formulation and protected the IGR pyriproxyfen in a microcap because this active ingredient is the most susceptible to breakdown by UV light, protecting it from rapid breakdown. This unique formulation gives PMPs an easy to use, versatile product to manage pests – indoors or outdoors.

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The purpose of microencapsulating adulticides is to help them last longer in the environment; to protect it from UV light, heat, pH fluctuations, and other environmental factors. CapVantage technology helps CSI to create CS formulations that release the product quickly and microcaps that last longer to deliver long-lasting pest management. Additionally, microcaps adhere to insect & arthropod exoskeletons to help deliver a dose of the active ingredients directly to their bodies.

Suspension concentrate (SC) formulations are a solid active ingredient dispersed in water and are a very common formulation in the pest management toolbox. They are popular because they are easy to use, effective and there is less chance to damage surfaces compared to EC (emulsifiable concentrates) formulations. The damage they can potentially do to spray equipment, filters, and nozzles are also less than wettable powder formulations (WP) and they tend to stay in suspension longer after mixed. Typically, SC formulations also contain adjuvants to help the active ingredients work better.

ProFlex is the first ZC formulation CSI introduced. It is labeled for both indoor and outdoor applications as well as food handling establishments. It may be used as a general surface, crack and crevice or spot treatment in, on, and around structures.

Proflex CTA
ProFlex contains three active ingredients: Lambda-cyhalothrin, Novaluron, and Pyriproxyfen. The lambda-cyhalothrin and pyriproxyfen are contained in microcaps and the novaluron is free in the formulation.
ProFlex makes dosing and measuring easy so PMPs can spend more time solving their customer's problems and less time reading and interpreting labels. With long-lasting benefits and superior active ingredients, ProFlex is the perfect product for PMPs looking for simple, easy-to-use products that are effective against a wide range of pests.

CockroachMortalityChartIn this study a surface was aged for a full 90 days and ProFlex still performed both quickly and completely to kill large cockroaches. Applications made on similar surfaces are effective against hard to control pests for a full three months!

..........................ProFlex continues to kill mosquitoes outdoors for 90+ days........................


The researchers at CSI wanted to determine how long Proflex would last outdoors on treated plants and still provide control of common biting mosquitoes. Proflex was applied at a rate of 1 oz per 1,000 ft2 on plants commonly found in landscapes. The plants were then aged in outdoor conditions for 150 days (5 months). Proflex continued to provide fast and effective control of mosquitoes for a full 5 months. 

DuraFlex was the second ZC formulation CSI introduced. While it was the second ZC formulation, DuraFlex is the first product to ever contain microencapsulated bifenthrin. In addition to being the first microencapsulated bifenthrin product on the market, DuraFlex also contains two insect growth regulators in a powerful ZC formulation. Control Solutions, Inc. is excited to introduce DuraFlex, a combination of a well-known, trusted adulticide, bifenthrin, plus the added benefits of 2 IGRs, all combined in one easy-to-use formulation. With simple mixing rates and flexible reapplication intervals, DuraFlex is a great choice for PMPs looking for simple pest management solutions.


By combining these two formulations (SC+CS) we’ve gotten the best of both formulations. These formulations have the long lasting benefits and the environmental protection of encapsulated solutions, plus the immediate activity of SC formulations. This is all delivered in one easy to use product.

*ZC formulations are recent developments. For details, please see Manual on development and use of FAO and WHO specifications for pesticides, Section 7.42 MIXED FORMULATIONS OF CS AND SC (ZC), page 172, Click here.


Janis Reed, Ph.D., BCE

Technical Services Manager PCO Product Development

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