West Nile Virus Surveillance Program

Tire Pile Owners

Is my tire pile a mosquito-breeding site?

Tire piles could provide suitable areas for mosquitoes to breed, including those known to carry West Nile virus. When discarded tires are allowed to accumulate even a small amount of water, they become attractive sites for mosquitoes to lay their eggs.

For example, during the course of one season, thousands of mosquitoes can be bred from just one tire. If tires infested with mosquito eggs, larvae, or pupae are transported, the potential to spread mosquito populations increases.

How can I prevent mosquitoes from breeding?

If a tire pile exists on your property, it is your responsibility to make sure that it does not create a nuisance. There are a number of ways to eliminate mosquito breeding in tire piles.

Most importantly, standing water in the tires should be eliminated. This can be accomplished by properly storing tires under a tarp, and by making sure that rainwater does not accumulate.

In situations where eliminating mosquito-breeding areas is not a practical alternative, larviciding is the most effective control technique. Several larvicides are well suited, including Bacillus sphaericus. B. thuringiensis israelensis (B.t.i.), Temephos, growth regulators, oils and mono-molecular films. These larvicides can only be applied by certified pesticide applicators. An applicator can help you to determine which product would best suit your situation, and what type of control activities should be conducted.

EPA - Pesticides and Mosquito Control

Public Health Page