The larvae of Fungus Gnats (also known as Sciarid Flies) can cause damage to the roots of growing plants, particularly those of seedlings and young cuttings. Keep them at bay with one of our specialised control products which has been purpose-designed to deal with them. Neem oil deters the flies presence while Tanlin actively kills the larvae in hydroponic reservoirs and soil. Insect catchers are great for catching flies of all types.