Mosquitoes and gnats are both PESTS that can cause a great deal of annoyance and discomfort. Mosquitoes are known for their ability to spread diseases such as malaria, dengue fever, and Zika virus, while gnats are small flying insects that can be a nuisance in homes and gardens. Both mosquitoes and gnats can be difficult to control, but there are a variety of methods available to help reduce their populations.