The Valent Gnatrol WDG Biological Larvicide is best utilized in greenhouses for fungus gnat larvae management. It may be administered on a wide variety of ornamentals as well as all vegetable sets bedding plants and bulb crops. Once the larvae have consumed the solution they become paralyzed; will stop ingestion immediately and die – usually within twenty four hours.
1/4 teaspoon per gallon for maintenance Control
1 teaspoon per gallon for a light infestation
3 teaspoons per gallon for a heavy infestation