Fruit Fly Infestation

[Phal Gal]

Hello,

I think I have an infestation of fruit flies in my Orchids. I don't think they're mealybugs, they're not leaving the cottony strings anywhere...however, they're not attacking my fruit. I have several different plants in the house, none of them look like they're being eaten, but when I water they come out of the soils (particularily the orchids and my Hoya).

My grandmother told me to spray with soapy water...is this safe? What else can I do?