Help With a Bad Fungus Gnat Problem. Please!?

I have a bad fungus gnat infestation, they are eating my roots and my plants are going to shit.. i am not happy, THEY MUST DIE. they attacked my last grow, one person told me what it was but i was too focus'd on other issues with the grow and i dismissed it.

Will neem oil do the trick? how about adding sand to the top, ive heard that helps break the cycle.. they came in during the summer and stuck around. i REALLY want to be rid of these bugs, +rep for proper solutions.

I use safer sticky paper to catch my few fungas gnats.These pieces of yellow sticky paper let you know before your infested,you will see a few get stuck before total infestation occurs.I keep a few up even when Ive not seen any gnats.............peace

There was a thread on this subjecy a couple of hours ago and the guy gave him the ingredients to something organic to kill them......peace

You can tell Ive burnt one to many by my typing tonight......peace out

I grow indoors. I always get gnats. I use a product called "Mosquito Dunks". Dissolve 1 dunk per gallon water overnight and then water plant thoroughly. After watering cover with 1 inch dry sand. Use yellow sticky traps to catch mature gnats. I also use a pot or water with some dish detergent to catch those flyers that dont get caught on the sticky traps. I let the soil dry for 6 or 7 days or as long as I can almost to the point of stress to the plant.

That is what I do to stop gnats. My plant is always covered with sand throughout its entire lifespan...I remove it to water and replace it when I am done watering. Hope this helps and good luck.

why do u remove the sand to water the water wil run right through it

Best way to get rid of a gnat problem...
Step 1- Yellow sticky paper to kill the adults
Step 2- Water the plants using Bt (kills larvae)
Step 3- Soak the soil with pyrethrin
Both Bt an Pyrethrin are organic and will not be harmful to your plants.

Preventitive measures for future would be...
1. AVOID OVERWATERING!!
2. Remove any dead leaf or other organic debris from the base of the plant
3. Try putting about 1" or so of sand at the top of your grow medium, it makes it very hard for the gnats to penetrate and lay eggs.
4. If you have a consistent gnat problem (many mediums come infested with gnats) there is a type of plant called a "sundew" available at nurseries or seeds online that will kill gnats
Anyways, do those first three steps to get rid of the gnats and it will work

Good Luck!
(Also please note that if you are dealing with mature plants just use the sticky paper to kill the adults, gnats can't destroy a mature crop in most cases)