I found this online "But, while the adults rarely cause any problems, the young larvae will feed on the fine root hairs of your plants, causing them to lose vigor and develop yellow leaves. They can also tunnel into the base of cuttings or plant stems, which can be devastating for succulents, leeks, or onion seedlings in particular. Fungus gnats search out moist soil in which to lay their eggs. The eggs are about 1/100 inch in length and laid in clusters. Larvae are translucent gray to white worms, about 1/4 inch long, with shiny black heads. These insects can infest a crop from wet, algae-covered areas in the garden, from contaminated potting soil or by flying short distances from plant to plant." Fill a container with vinegar (red wine vinegar in my case) with a couple drops of dish soap added to break the surface tension. In a couple of hours there are around eight of them. I also ordered this on Amazon. I don´t want them all over my house when I get my meyer lemon tree inside. I hope this information helps.

i havent used any pesticide before now... i was treating mealies with rubbing alcohol but they were still hiding on me, this pesticide contains sulfur and pythrum as its active ingredients... if it were up to me i would slow down, but since im at the point that my husband is saying get rid of the pests or get rid of the plant im kinda trying everything... and ive held off treating it with any type of alcohol/water spray for a few weeks, just swabbing with alcohol when i see em... when my mom got sick of hearing me talk about having pests found the ortho ecosense sitting around at her house she gave it to me to use... i havent seen any pests so far and i treated it this last saturday... the fact that it was also a fungacide was just a plus, not the reason i used it in the first place... i know i may be new to hoyas, but if i dont get pests taken care of, my husband is gonna put a stop to the plants now before i get to move past the new faze...

I'm guessing that your description just doesn't suggest anything to any of us, sorry. One of those times when images would be helpful. A serious whitefly infestation is a most difficult thing to deal with, especially if it is community wide, as you suggest. Some gardeners like the sticky traps, but they can also catch beneficial insects and animals, too. I don't like them and won't use them....unless in a greenhouse.

Thanks guys, I just found some "tomato dust" out in the barn, a copper based product that maybe I can use until I get into town again. Not too many tears are going to be shed over losing a couple of P.O.s, I think I have 11 of them planted, and maybe I can head this off at the pass for the other varieties with some copper spray. Any recommendations on the brand? Also, should I pull these plants or leave them to die a slow natural death? I was expecting a fairly high mortality rate being my first year growing so if I pull these, I will have approx 70 tomato plants left. LOL, hopefully, knowing my weakness can become my greatest strength (in the garden, anyhow)!