Vertebrate Pest Management

Vertebrate pests include animals with a backbone, such as ground squirrels, mice and pigeons.

Exclusion

Exclusion is the practice of keeping the pest out of or away from crops, ornamental plants, buildings, etc. Using barriers, such as fencing and durable materials, to plug entrances into buildings or prevent animals from accessing crops, gardens, lawns or landscape plants, are examples of exclusion practices. Fences must be sized according to the type of pest to be excluded.

Photo of a deer jumping over a fence

To be effective, exclusion fences for deer must be at least 6 feet tall. Some experts recommend the fence be 7 to 8-feet tall.
Photo credit: Terry Spivey, USDA Forest Service, Bugwood.org


Sanitation

This is especially important for areas like kitchens, residences and areas where animals are kept. Eliminate food and water sources. Store food and animal feeds, grain and seed in rodent-proof containers. Repair leaky pipes. Sanitation is also important for managing vertebrate pests in yards. Avoid leaving windfall apples or other fruits and vegetables where they are accessible to pests. Cover your compost pile.
 


Trapping

There are several types of kill traps and live traps available for most vertebrate pest species. It is essential to choose the proper trap and learn the correct way to use it. Live trapping and releasing the pest is neither acceptable nor legal. Individuals who release live-trapped animals are moving the pest problem and sometimes diseases like rabies, distemper or plague along with them. Live trapping followed by an approved method of euthanasia is recommended. The American Veterinary Medical Association has specific guidelines for euthanasia.

Photo of a metal animal trap

When using live traps, do NOT relocate pest animals.
Photo credit: NDOA


Repellents

Repellants may be applied to valuable vegetation or can be used in areas where pests are known to frequent. They often don't work the way people expect them to work. Sunshine can break down the repellent, and sprinklers and rain can wash away the product. New growth on plants must be retreated, and animals may simply get used to the repellent.

Photo of a deer repellant attached to a fence post

Deer repellents can be attached to posts or fences.
Photo credit: Chazz Hesselein Alabama Cooperative Extension System, Bugwood.org


Rodenticide Baits

Baits such as seeds, grains and vegetation treated with rodenticides are used to control several types of vertebrate pests. Most baits must be applied in bait stations or underground within animal burrows to lessen the risk of killing of non-target species. Pesticide labels describe methods for applying the bait. Pesticides used include strychnine, zinc phosphide and various anticoagulants. Strychnine may only be applied underground.

Photo of a wood bait station box

Use an appropriate bait station to reduce the chances of killing non-target animals.
Photo credit: NDOA


Fumigants

Smoke bombs and various types of internal combustion engines produce poison gases, including carbon monoxide, that can be used as fumigants. This is a very dangerous method that should be avoided by homeowners. To be effective, all burrow entrances must be blocked. When using smoke bombs, avoid areas near structures, haystacks, etc. Aluminum phosphide fumigants are available either as tablets or pellets. When applied in rodent burrows, they produce phosphine gas, which is deadly. Applied improperly, aluminum phosphide has resulted in numerous human deaths. To purchase, apply or supervise the use of this pesticide, applicators must successfully pass the state rodent burrow fumigation certification category. Homeowners cannot use these products.

Hefner, M. 2019, Vertebrate Pest Management, Extension | University of Nevada, Reno. IP

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Also of Interest:

 
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Nevada Noxious Weed Field Guide – Mayweed chamomile
Mayweed chamomile is a noxious weed that has been identified by the state of Nevada to be harmful to agriculture, the general public, or the environment. Learn more about this weed.
Blecker, L., Creech, E., Dick, J., Gephart, S., Hefner, M., Kratsch, H., Moe, A., Schultz, B. 2021, Extension, University of Nevada, Reno, Field Guide
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Using native plants to attract pollinators and other beneficial insects - workshop and plant giveaway
These workshops in Reno and Elko will cover the fascinating ecology of our native pollinators and how to use native plants to provide critical habitat for them and pest control services for you. In addition, there will be a plant giveaway at the end of the workshop!
Burls, K.J. and H. Kratsch 2021, University of Nevada, Reno Event Calendar
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Know Nevada Insects: Aphids
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Burls, K. and H. Kratsch 2020, University of Nevada, Reno, FS 20-30
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Nevada Noxious Weed Field Guide - African mustard
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Nevada Noxious Weed Field Guide – Common St. Johnswort
Common St. Johnswort is a noxious weed that has been identified by the state of Nevada to be harmful to agriculture, the general public, or the environment. Learn more about this weed.
Blecker, L., Creech, E., Dick, J., Gephart, S., Hefner, M., Kratsch, H., Moe, A., Schultz, B. 2020, Extension, University of Nevada, Reno, Field Guide
 

Associated Programs

ladybug larva eating aphids on a pepper plant

Integrated Pest Management

Integrated Pest Management program is a long-term management strategy that uses a combination of tactics to reduce pests to tolerable levels with potentially lower costs for the pest manager and minimal effect on the environment.