We talk about quite a number of strange robots sometimes here on Geek24 but here's one that actually does a good job of what it does - kill ticks.
"Spring is around the corner, which means kids will soon be out playing in the yard and parents will start worrying about ticks spreading Lyme disease. But never fear, a robot in a tick-snuffing denim skirt is here. A tick-exterminator designed by three engineering undergrads at the Virginia Military Institute scours yards for ticks and nabs them with its pesticide-laced denim skirt." says Wired.
The tick killing robot has a fairly good accuracy rate and in 8 hours it picked up 72 out of 75 ticks according to a student on the project team. Maybe next time they can make some robots that can kill mosquitoes and flies too; maybe small robots that fly with insectide tankers strapped on their backs spraying it directly at flies and mosquitoes with laser guided systems ;)