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Preventing the introduction and establishment of invasive species is always the best--and least costly--method of control. First step in the pest prevention battle Every dollar spent on pest exclusion saves $17 ($24 in 2006 * ) in control or eradication costs. **

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Preventing the introduction and establishment of invasive species is always the best--and least costly--method of control.


Pest exclusion is the key

First step in the pest prevention battle species is always the best--and least costly--method of control.

Every dollar spent on pest exclusion saves $17 ($24 in 2006*) in control or eradication costs.**

Avoids habitat destruction and native species loss

Excluding pests avoids additional pesticides in our urban and natural environments

Pest free agricultural production is essential to California’s economy***

* Adjusted for Inflation (US Bureau of Labor Statistics, Consumer Price Index, 2006)

** Congressional Office of Technology, “Harmful Non-indigenous Species in the US,” 1993

*** Shaded areas on any of the maps that follow illustrate the detection/presence of a pest within a particular state’s political boundaries and do not necessarily indicate its known range within that state.

Pest Exclusion is the Key


Citrus Canker species is always the best--and least costly--method of control.

Citrus canker is a highly contagious and devastating disease caused by bacteria. Movement of infected plants, seedlings, plant cuttings and fruit risks spreading this disease from one state to another.


Asian Longhorned Beetle species is always the best--and least costly--method of control.

A new pest here (and an old one in its home country of China), the Asian longhorned beetle is a serious threat to hardwood trees and has no known predators in the U.S. It can be spread via live plants, wooden packaging material and in timber.


Gypsy Moth species is always the best--and least costly--method of control.

Gypsy moth is an important pest of hardwoods and has an extensive ecological range. Life stages of the insect can “hitchhike” on items moving long distances, such as nursery stock, vehicles, forest products and outdoor household items.


Japanese beetle
Japanese Beetle species is always the best--and least costly--method of control.

Japanese beetles are known to feed on at least 295 species of plants in the U.S. Larval damage to plants occurs belowground and from adults aboveground. Beetles are routinely intercepted on ships and aircraft and also found in agricultural produce and soil.


Emerald ash borer
Emerald Ash Borer species is always the best--and least costly--method of control.

The larvae of this Asian beetle feed on the cambium layer of ash trees, between the bark and wood, eventually killing branches and entire trees. The insect can be spread via nursery plant shipments.


French tamarisk
French Tamarisk species is always the best--and least costly--method of control.

Also known as saltceder, tamarisk is an aggressive competitor against native plants, developing into monocultures that are suspected of lowering water tables and modifying wetlands and wildlife habitats.


Diaprepes Root Weevil species is always the best--and least costly--method of control.

Diaprepes root weevil is native to the Caribbean and is a serious pest of citrus, ornamental plants and some crops. A single female can lay up to 5,000 eggs. This beetle can be transported accidentally via plants or soil.


Quagga Mussel species is always the best--and least costly--method of control.

Dreissena species, including the closely related quagga and zebra mussels, are less than an inch long but reproduce by the millions. These rapidly spreading invaders can coat nearly every available surface, clog pipelines, damage machinery, harm fishery resources, change ecosystems, and foul water with their waste.


Considerations

Investment in pest exclusion efforts is essential. species is always the best--and least costly--method of control.

Agriculture, the environment, our natural resources and our citizens all stand to benefit.

Exclusion reduces the need for pesticides.

Our pest prevention system is straining to keep pace with invasive species.

Considerations


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