I put my purple passion outside the other day to get some sun (I've only had it for a few weeks) I figured a couple hours outside couldn't hurt it was over cast well I had worked the graveyard shift and woke to a thunderstorm grabbed the plant and brought it back inside. I noticed a knat flying by it and landing on the soil. I don't want an infestation how can I safely take care of it without hurting the plant? And keep them from coming back? Thanks in advance!