Natural Fungus Gnat Barrier & Pot Topper Terrarium Makes up to 10 litres

Makes up to 10 litres of spray

Although they arrive in compost that contains low levels of fertiliser

Dad and him

The spiky bases hold woody and green stalks

Natural Fungus Gnat Barrier & Pot Topper Terrarium Makes up to 10 litresThis totally natural, pet and child safe Fungus Gnat Barrier & Pot Topper helps deter fungus gnats that fly around the surface of houseplant compost. Made from crushed olive pomace, a sustainable by product of olive production, this eco barrier works by preventing the gnats and other root feeding pests from laying eggs in the soil of houseplant compost. Applied to the top of the compost, the attractive natural barrier also provides organic nutrients