This didn't make me go wtf? but I didthink it was quite interesting. I heard about the Sterile Insect technique on QI and read a little about it. Apparently many species of female insects only mate once so scientists produced sterile males through radiation and released them into an area where they wanted to reduce an insect's population. It's been used to eradicate the tsetse fly from parts of Africa, a very dangerous fly which carries the often fatal "sleeping sickness" disease. They say it could used on mosquitoes - now that is good news.
This is from wiki -
The sterile insect technique is a method of biological control, whereby overwhelming numbers of sterile insects are released. The released insects are normally male as it is the female that causes the damage, usually by laying eggs in the crop, or, in the case of mosquitoes, taking a bloodmeal from humans. The sterile males compete with the wild males for female insects. If a female mates with a sterile male then it will have no offspring, thus reducing the next generation's population. Repeated release of insects can eventually wipe out a population, though it is often more useful to consider controlling the population rather than eradicating it.
The technique has successfully been used to eradicate the Screw-worm fly (Cochliomyia hominivorax) in areas of North America. There have also been many successes in controlling species of fruit flies, most particularly the Medfly (Ceratitis capitata), and the Mexican fruit fly (Anastrepha ludens).
Insects are mostly sterilized with radiation, which might weaken the newly sterilized insects, if doses are not correctly applied, making them less able to compete with wild males.
However, other sterilization techniques are under development which would not affect the insects' ability to compete for a mate