 If you look at mosquito larvae in standing water, it looks like hundreds of little things wriggling around. They actually refer to them as wrigglers. They're tiny little things, but they're always moving around in the water, and they're filter feeders. So they're sucking in anything they can that's in the water. They're trying to get nutrients from the water. So mosquitoes actually prefer stagnant water to fresh water because there's going to be more food there.