My buddy did mosquito control out of the West Metro for a couple of summers a number of years ago.....I asked his opinion on the small very temporary wetland in the woods just across the property line as the source of the mosquitos in our vicinity and he was like,
.
"Thats where at least 95% are coming from, and I'd bet it's North of 99%."
Little depressions in the wood that get wet, go dry, and get wet again are mosquito factories. Wetlands will generate them but there's something about the ones where they can lay eggs, go dry, and then the eggs hatch when they get wet again that make them extremely prolific. Basically, there's a jungle-like Panama-esque Malaria factory type of mosquito wetland directly across the property line.
These arrived from Amazon a couple weeks ago.....I chucked an entire half of the order into the wetland, and it's made a big difference. There are still some mosquitos but nowhere near as bad as a week ago. The floating donut pucks are supposed to last a month and treat a much bigger area, but fuggit.....better to go overkill than under kill, amiright or amiriiiiiight?
I'll dump the rest of them a week before the 4th.
FYI due to metro mosquito control.....without them.....for every mosquito in the metro there'd be five if they weren't actively spraying shit and dumping pucks into wetlands.