I need some feedback in regards to my two 4x3 windows I have in the grow room that lead to outside. I have been keeping one of them open during the day but I am worried about bugs getting in as grass and plants are right there. Should I open it each day for a couple hours or leave them open from 11am - 6pm? Or should I just keep them both closed to avoid infestation? Let me know. BTW the temperature outside is usually 70-85 degrees.