I have a 55 Gallon Tank of Madagascar Hissing Cockroaches and before I went to college I used to raise superworms as well for my Piranha who died in the Spring and i decided to let my Hissers take up residence in the tank which i tried to make look as natural as possible to there home-land. My major question is I had like three superworms left alive before I went to College so I threw them in with my Hissers because they live in rotting wood as well and to my suprise I come home from college and now the substrate is full of the big guys, they even climb up the wood I have in the tank and interact with the Hissers. My question is, would this poss any threat to the Hissers? There kind of impossible to get rid of now. I put them in thinking they would eat food that falls that the Hissers dont eat to prevent mold and it worked, now it seems it worked too well.