Filters

• Installing filter systems on faucets and spigots will prevent larvae from exiting the water system. The larvae pose no health risk, however, the sight of them can be repellant for some. Using a filter will prevent them from being seen while removal of the larvae from the water supply occurs.
  
  

Larvae Control

• Applying insecticide clearly designated to control Midge larva and containing methoprene and Bacillus thuringiensis var. israelensis will kill the larvae at the source, the water supply well or tank. Make sure that the insecticide is also clearly labeled as safe for addition to potable water sources and avoid products containing temephos as there is concern over its safety for human consumption.
  
  

Mosquito Control

• Control the adult population by applying insecticide specifically listing midge control as one of its properties. Removing or moving outdoor lights from near the water supply will also help control the adult population. Midges are attracted to light and stagnant water and will gather and lay eggs in those areas.
  
  

Reducing Breeding Areas

• Drain standing water, add aerating pumps to still ponds or fish that will consume larvae and adult midges to reduce the breeding areas for the gnats. Examine the water supply lines or water well access to make sure that any openings to the water are covered with a fine mesh to prevent the adults from laying eggs in the potable water source.