So i was getting ready to start my grow this year and i noticed i have little flies inside my bag of soil from last year. I'm guessing they are fungus gnats. Does anyone have a suggesting for getting rid of them before i begin growing? I've read about baking the dirt, but if the dirt gets too hot it release toxins that will hurt my plants, and i guess it really stinks. I can't put the soil outside to compost it, and then I've about hydrogen peroxide but it can kill off good and bad in the soil. What are your thoughts on it? And can i just spread the soil out and let it dry completely or will that Not work?