Golden Pothos has fungus gnats
I have had this plant for 12 years and never had gnat problem.
The plant become really big so I changed it into a bigger pot and I used Vigoro plant mix from Home depot.
Since then I have had these fungus gnat problem. I tried cinnamon and hydrogen peroxide and vinegar sprays. Not much effect. Today I sprayed neem oil mixed with water. Looks like it may work. But too early to tell.
My questions is , once I bring this gnat under control hopefully with neem oil, should I change the potting mix? Will the gnats lay dormant and come back again.? Should I change only the first 2 inches of the soil or the entire soil in the pot.
I have caught the adult gnats by using apple cider vinegar and the fly catcher bat.
Any tips to prevent this in the future, is much appreciated.
I do not over water my plants BTW. Did anybody try neem oil and vouch for its effectiveness. I am trying to go chemical free to treat these gnats.