What kind of pests? how to I kill them?

Question

Have sticky leaves on one phalenophsis orchid, black tiny bug? Or scale, it seems like, on underside of leaves. I can clean it off with fingernail, but always comes back. How can I prevent this? I’m keeping this one separated from other orchids. Not happening on adjacent varieties of house plants in window.

Answer 1

Unfortunately your photo did not come through. I will be unable to identify your pest. It does sound like scale, by the description. This article will help: https://www.gardeningknowhow.com/plant-problems/pests/insects/control-plant-scale.htm