I found where the tape had come loose and I had a opening in the cover on my earthbox Jr around the stem. Looked good under the cover and found 2 gnats. I dropped a piece of mesquito dunk down the film tube but I want to make sure I prevent an infestation. I'm gonna get some new mesquito dunk tomorrow dissolve some in water and top water with it and do it again in a week. Should I do something else?