Hello , I'm new to this forum , just joined a few days ago and finally got approved as membership .. Anyways , I'm getting Red Runners and a few other climbing roaches this coming week. I've got the 50 gallon Sterilite Containers all ready with screen ventilation and lots of egg crates. I've made my " roach jello " food today with lots of veggies and a few fruits. My main question is, " what is the absolute best, most effective barrier to put on the upper portion of each container to prevent any escapes from " climbing " roach species ? I've used packing tape before with crickets , it seemed to work as long as i kept the tape very clean , wiped down each week. Would packing tape work ? Or does anyone else have suggestions ? Thanks for all your help in advance !