How to Get rid Gnats in Garden Grass (UK)?

Fungus gnats are more of a pain then a pest for the plants. Keeping the soil slightly drier will help as they love to eat the fungus in the soil., which is readily available in moist soils. You can also put a layer of an inch or two of course sand on the top of the soil. the gnats cannot get through this and it will eventually kill them off. This is one method of killing them in houseplants. However, may be difficult to do for a very large area.

Of course, you can use insecticides and spray the ground, but I don't suggest that with all those animals around.

You might want to go to a local garden center where educated professional can help you as they have more knowledge with organic methods of insect control. (Not the big box stores)

Gnats Uk

If a trench could be dug to drain the water off, that would let the soil dry which would harm the eggs and larvae of the gnats. Their eggs are in the soil too. The way to get rid of gnats inside the house is to put soapy water and vinegar in containers to attract the gnats to it and they drown in the soapy water. This would have to be put up high so the animals can not get to it.

Gnats love beer. An inch of Beer in long neck bottles will trap them. If the animals get hold of the beer, it will not hurt them. Really would make them happy. The beer could be put in paper cups and plastic wrap put over them with rubber bands and holes put in the wrap will trap the gnats.

Gnats like moisture in the soil, so allow ur root system to completely dry out between watering. They should be gone shortly. If that doesn't work, they sell organisms which u add to the soil to eat the gnats and their larvae. U sholud also pick up some neem oil. It does wonders with insects