Suspend<sup>®</sup> PolyZone<sup>®</sup> – the better choice for mosquito control

Suspend PolyZone is a residual barrier spray that provides proven efficacy on mosquitoes for up to 90 days.

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What makes Suspend PolyZone better?

Suspend PolyZone features a proprietary polymer layer that protects the active ingredient from weather, UV exposure, irrigation, spray rinsing, and mechanical abrasion. This controlled-release formulation, ensures your treatment will continue to control targeted pests for up to 90 days. With Suspend PolyZone there are no phytotoxic effects, staining, or rapid degradation under UV light as observed in other pyrethroids. Suspend PolyZone has been tested and shown to control important species of mosquitoes known to transmit Zika, West Nile, Dengue and Chikungunya.

Powerful performance against resistant mosquitoes

The most commonly used active ingredients for mosquito control are older generation Type I pyrethroids such as bifenthrin, permethrin, phenothrin, and allethrin.

Type II pyrethroids like deltamethrin, are second generation pyrethroids and contain an additional chemical group (alpha-cyano) that protects them from the insect enzymes that easily break down Type I pyrethroids. Because of this, Suspend PolyZone is an effective tool for combatting mosquitoes that are resistant to common Type I pyrethroids.1

While similar, the distinct types of pyrethroids are detoxified by very different pathways.

// Type I pyrethroids are detoxified predominantly by esterases.
// Type II pyrethroids are detoxified predominantly by cytochrome P450 and Microsomal monooxygenase activity.


deltamethrin | Bifenthrin


Unlike microcaps, Suspend PolyZone stays put

The proprietary polymer layer of Suspend PolyZone adheres to porous or aggressive surfaces like wood, brick and concrete. Microcaps can be washed away by rain, irrigation and other environmental conditions. The staying power of Suspend PolyZone makes it ideal for targeting both crawling and flying insects like mosquitoes, which are exposed only when they come to rest on a treated surface. Suspend PolyZone coverage is there where it counts.


stays put


Mammalian & environmental safety

// Deltamethrin is not classified by the EPA as a possible human carcinogen, unlike other technologies on the market.
Despite its high usage2 in the state, deltamethrin is less frequently detected in the urban watersheds of California than most other pyrethroids.
– Deltamethrin was detected 85% less frequently than another leading pyrethroid.3

Trusted performance with fewer callbacks

// Proven performance at multiple rates – 0.01% - 0.06% (0.25% - 1.5 fl. oz./gal.)
– Suspend PolyZone gives you a longer residual than other pyrethroids, up to 90 days.

// Proven reduction in callback frequency. Fewer re-services can improve fleet utilization, Ultimately reducing footprint.

Culex quinquefasciatus | 56-day residual / 24-hour mortality / 3-min exposure


Envu Internal Study OE14USAVK4

Ideal for monthly outdoor residual service intervals Aedes Aegypti | 28-day residual / glazed tile / 3-min exposure


Envu Internal Study OE14USAVK4

// Other products cannot beat the unstoppable staying power of Suspend PolyZone.4
// On foliage and abrasive surfaces, Suspend PolyZone outperforms the competition.


For more information, contact your local Envu Pest Management & Public Health Representative.



1 – Systematic review on pyrethroid toxicity with special reference to deltamethrin. Journal of Entomology and Zoology Studies 2014; 2 (6): 60-70
2 – A “Top 5” active ingredient, cited as “most often used” by 60% of respondents in 2010 Survey of California PMPs by PWG
3 – DPR Ambient Monitoring Report (2015):
4 – Source: Envu ES Study: OE14USAVK4

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