My husband is an avid gardener but forgets to drain all his buckets and things. Also, we bought ribbed downspouts for water drainage before realizing that mosquitoes could lay eggs into the tiny amounts of water in the ribs.
I'm on his case to empty all his containers, and to replace the spouts. To no avail. He's the one in the yard during the summer, tending his garden, and the mosquitoes don't seem to bother him.
When he's not there, I drop mosquito dunks everywhere except his veggy plot. But we still get a ton of mosquitoes!