Do all the offspring die?

In the laboratory where reared in ideal conditions, a very small number of larvae (up to 5%) can survive to adulthood but in the wild, this is extremely unlikely. But even if they did, this would not be a problem because supressing the pest mosquito population is a number’s game – the more pest female mosquitoes in the wild that mate with Oxitec males, the fewer the offspring there will be to transmit disease.