Hey guys I need your help. I have a huge infestation of bugs in my closed chamber enclosure. I have always used Eco earth or top soil as substrate before I built my new closed chamber enclosure. But when I built this new cage I switched to cypress mulch. I've noticed some flying bugs in there lately that look like little Knats but I just got back from vacation and it is infested inside. How do I get rid of them? Is it because I'm using cypress mulch? How do I prevent them and should I switch substrate? Or is it impossible to keep them out since its a closed chamber cage and bugs love humidity. Any help would be greatly appreciated....thanks!