Whenever the Chesco Health Department plans a spraying event, the least we can do is observe to be sure applicable procedures are scrupulously followed. Per agreement earlier in 2017, the Health Department now gives 48 hours notice before spraying. We encourage you to Sign up for the Health Department mailing list so you will get the maximum warning.
Anyone in a spray area, please try to observe (without exposing yourself directly to spray) and let us know:
• The release says “After exhausting all other available mosquito control strategies…” Do you know of other such strategies to date in your locality, such as working with the municipal government to educate residents, larviciding suspect bodies of standing water, or alerting property owners whose properties may be violating the Health Department’s regulation against allowing mosquitoes to breed in standing water?
• Are adequate warnings posted on streets well in advance so residents and visitors will know to stay out of the way of the spray and take protective measures?
• Did you observe people who were not aware of the recommended precautions (such as joggers entering the area during or right after spraying)?
• Is there a lead truck with a loud speaker in front of the spray truck warning people to stay indoors or leave the vicinity?
• Does the truck spray more than once in any street or on any area? Does it crisscross any area, thus delivering a double dose to some addresses?
• Is the spray shut off as the truck approaches a stream or body of water and if so, how many feet away?
• In the days after spraying, what difference do you notice in the number of mosquitoes and other insects such as honey bees and dragonflies?
• Did you notice any effect, either immediate or after a few days, on children, cats, frogs, birds, fish, or bats? Please try to video or photograph any evidence.
• How long does it take for the adult mosquito population to get back to about what it was before?
DSM needs you to help protect people and the environment and to let public officials know what you think.
Please also note these precautionary measures:
Spraying always occurs in the evening because bees are less active then and, if they know what is good for them, return to their hives (for what happens when spray is not scheduled properly see here). Beekeepers who have hives in the spray area need to take protective measures.
During the spraying (and ideally till the next day) residents should shut windows and close off all ways that outside air can enter their house. Cats should be brought inside, as they are sensitive to the pesticide used. The next day any outdoor play equipment should be hosed or wiped off before children come in contact with it.
People who have a high level of chemical sensitivity may wish to plan an absence overnight or longer.