You can crash your yard's mosquito population without spraying a single chemical with a Mosquito Bucket of Doom. Fill a 5-gallon bucket about two-thirds with water. Drop in a handful of grass clippings, leaves, or hay. Let it sit for a day, then drop in a Bti dunk (also called Bacillus thuringiensis israelensis, sold at any hardware store as "mosquito dunks," about $10 for six). Mosquitoes are powerfully attracted to fermenting water and will lay their eggs in your bucket. Bti is a naturally occurring soil bacterium that produces a toxin that kills mosquito, blackfly, and fungus gnat larvae only. This method doesn't harm bees, butterflies, fireflies, fish, frogs, birds, pets, or people. BTI dunks are EPA-approved for organic use and safe in animal water troughs and birdbaths. One dunk lasts about 30 days. Top off the water as it evaporates. Cover with 1/2-in Mesh Hardware Cloth to prevent animals from getting trapped and put the bucket somewhere shady where pets and kids won't get into it. The bucket becomes a mosquito magnet and a dead end. Compare that to fogging the entire yard with pyrethroids, which kills every insect in it, including the predators that eat mosquitoes. Doug Tallamy's Homegrown National Park has been running the "Mosquito Bucket Challenge" since 2021. The more buckets in a neighborhood, the bigger the dent. One bucket per yard is a great start.