They don't really, at my old house we had like TOOONS of them, like a huge nest or something idk, but anyways our lawn was the greenest and it needed to be mowed on a weekly basis or else it would get too long
I have the biggest phobia of these little shits to the point where I hyperventilate until I pass the fuck out or if I'm brave enough that day I cry while vacuuming the fucker
Idk why but it is one of my biggest pet peeves when people call these Mosquitos and freak the fuck out when they see them. Bunch of ignorant fucks. (Rant over)
Source: Lilo and Stitch.