Gnat Off! Pot Plant Barrier. Containing a specially formulated mixture of pumice, course sand and neem granules, Houseplant Hoarder's Gnat Off! naturally discourages fungus gnats from egg laying. It does this by creating a physical barrier over the soil and keeping the surface dry. Gnat Off! is free from harmful chemicals and synthetic pesticides and utilises the natural power of Neem. 

WHY DETER FUNGUS GNATS? 
Fungus gnats are one of the most common soil breeding pests indoor gardeners face. Not only is having them flying around indoors unpleasant, they can also be detrimental to plant health. If present in large enough numbers, fungus gnats can damage plant roots and stunt growth, particularly in seedlings and young plants. 1.2kg Cylinder.