For about the past week I have been hearing a scratching noise in my tank. I figured it was just my leo scratchin at something. Well tonight I had some time so I decided to give my tank a quick cleanout. I started removing my fake plants and saw grey dust on the floor at the back of my tank. Upon further inspection it appears that 7 of the mealworms that I keep in a dish had escaped the dish and were now in the process of burrowing into my foam background. Needless to say I threw the worms and the background in the trash. Just figured I would share in case anyone else notices a fine grey dust in their terrarium. Tomorrow Im going to go buy 1 of those regular outside the tank background papers. Granted not as pretty to look at but not edible either.