Gnats are an annoyance, but quite easy to get rid of. They will damage the plant in large enough numbers, since they live in the soil and will eventually cause damage to the root system. Raid won't help for long, since there are probably lots of larvae in the soil already, and you will only be killing the adult flies if you remove your plant while spraying.
Gnats normally set up home when your soil is not allowed to dry out properly between waterings, and since you only have one plant, you can probably rid yourself of them by simply not watering for a while. The plant may suffer some stress, but the gnats will die of starvation long before your plant dies of underwatering.
A less stressful approach would be to use a combination of sticky fly traps to catch the adult flies, and a layer of sharp sand (aka builders sand) on top of your soil to kill the larvae in the soil. Combined with a proper wet/dry watering schedule, this will rid you of gnats effectively.
You can also buy products specifically designed to kill them (gnat off, no gnats etc.) but I have never needed these, so I can't say if they are any good.
Gnats normally set up home when your soil is not allowed to dry out properly between waterings, and since you only have one plant, you can probably rid yourself of them by simply not watering for a while. The plant may suffer some stress, but the gnats will die of starvation long before your plant dies of underwatering.
A less stressful approach would be to use a combination of sticky fly traps to catch the adult flies, and a layer of sharp sand (aka builders sand) on top of your soil to kill the larvae in the soil. Combined with a proper wet/dry watering schedule, this will rid you of gnats effectively.
You can also buy products specifically designed to kill them (gnat off, no gnats etc.) but I have never needed these, so I can't say if they are any good.