Leon, do they burro into the soil to live you think or just rest on the top of soil.
Martin

I tried sand on other plant cuttings, but the gnats can still get in the soil through the bottom. Now I use mosquito dunks in the water and this kills the gnat's larvae in the soil. But with the adults, you need another method of killing them. I place small dishes with a mixture of water, vinegar or cider vinegar and dishwashing liquid. The adults are attracted to this and drown.

Martin, the gnats get in the soil to lay their eggs and hatch hundreds more gnats!

Eloise,
im learning something new so i ask this question please,
what is mosquito dunks?
Thanks in Advance,
Martin

Normally I have tons of them, and when I started my cutting this year they began to emerge. But after a few days/weeks they began to dissapear and now I have none. I don't know why or how, but I'm thankful!

I have been lucky in the past without fungus Gnats. I wasn't so lucky about 2 months ago. I tried the conventional methods described above with varying results. I added the Garden Safe Product which worked like a charm. Go after the eggs and the problem will disappear within a week. Good Luck!!

Vinnie

Here is a link that might be useful: Garden Safe Fungicide 3

Martin, Mosquito Dunks (actual name on package) are used in ponds and is for biological control of mosquitoes. They look like small donuts. I got a pack of 6 dunks from a nursery. I keep a small chunk of dunk (rhymes!) in a gallon of water (use a milk container) and use that to water my indoor plants when treating for gnats. The dunk doesn't totally dissolve so you just refill your container with more water and let it sit. Hope that helps. BTW, the 6-pk cost under $11.