I found some what I thought were mite eggs on a plant in my room. They were on my Thai basil, I know not the good stuff everyone here grows, but my garden is also a garden. I love to eat after I smoke so I also grow herbs in the garden to eat. Anyways, soory off topic there. I use neem oil even when I have nothing there just as a precation. I have spayed it on several plants that are under H.O. T5s with the lights on and have had no adverse effects yet. Okay not true. My plants did turn a little yellow for about 2 days after each application and then went back to green until the next application. My plants all recovered very easily from it and the insects were gone. Mine were actually gnats I think. Don't know if it was the neem or not I also let the soil get nice and dry because I was overwatering a bit on those plants.