Hick i looked everywhere for that freaking sand and couldn't find it that's why we went with the no pest strips. Any idea where to get it because it has to be sterile correct?Hick said:"gnats" ...as adults are relatively harmless to your plants. Their offspring, however, in the puberty stage live in the dirt and eat your roots. Damaging to your plants. Gnats are most commonly found where overwatering is practiced. Constantly moist soil makes for an ideal breeding environment. You should allow at least the top 3" of the soil to dryout between waterings.
A 1" layer of playground sand on top of the medium will help prevent further infestation.