Fly/bugs in my orchids?

[MarieYad]

I have left my orchid outside during early fall to promote spiking/growing... and now i have brought them back inside, since the night time is very cold.

Now I notice there is some small flies/bugs in the potting mix... How do I get rise of it? Can I use soap base pest stuff?? are the flies/bugs harmful to my orchids?

I water my orchid once a week... I dont let them sit in water.... they are rooting nicely right now... and one of them starts to spike...