BVA-2 is a highly refined petroleum-based product that is used only on the pupal stage of the mosquito. This is a last resort material that is used to prevent adult emergence. It works by changing the surface tension of the water surface, causing both the larval and pupal stages to drown.
Because of its potential to affect other air-breathing aquatic insects, this insecticide is the least preferred mosquito control method used by the District. This insecticide does break down quickly in the environment, persisting as an effective surface film for only a few hours at best. Complete breakdown of this insecticide occurs within a few days. This chemical control strategy can be quite costly both in time and materials.
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Website Accessibility Policy
Napa County Mosquito Abatement District is fully committed to providing accessible facilities, elements and
channels of communication to all members of the public. As part of this commitment, Napa County Mosquito Abatement District
has a policy of providing an accessible website compatible with the Web Content Accessibility Guidelines (WCAG 2.1) and
commercial screen reading software. All features of the website are coded to allow individuals with vision and
other impairments to understand and use the website to the same degree as someone without disabilities. We welcome
feedback and can often resolve issues in a timely manner if they arise.
If you need any special assistance or accommodations:
Napa County Mosquito Abatement District has designated a compliance officer for website disability-related accommodations.
The compliance officer has received training in website accessibility and updates the site in accordance with those best
practices. Contact our accessibility officer to report an issue.
Compliance Procedures and Reports
In addition to testing with users with a wide range of disabilities and coding our website to WCAG standards,
Napa County Mosquito Abatement District regularly scans its website to ensure ongoing compliance, and makes timely
changes to any inaccessible changes, if any are found.
Linked Documents and Third Parties
Please note that this site may link out to third-party websites, such as state or federal agencies, that do
not have accessible content. This site may also include documents provided by third parties included in our
agenda packets, for example. While we cannot control the accessibility of content provided by third parties,
we are happy to assist any member of the public with reading and accessing content on our site.