I do worry about them infesting my house. That's why there are "roach motels" in the corners of every room in my house. Roach poison paste on top of each windowsill and doorframe, roach killing powder under the dishwasher, refrigerator, oven, furnace, hotwater heater, washer, and dryer. All of the poison in my house is well out of reach of my girlfriend's little dog, and in places where roaches would likely be found.
Many roach poisons are designed for the roach to return home and kill all of his housemates, that's why I also vaseline the OUTSIDE of my roach tanks. I don't want poisoned roaches returning home to kill my colony.
Also, tropical roaches do no readily breed at room temperature. Plus if you keep your house clean there really isn't that much for them to eat. I mean one or two could survive for a while yes, but would they thrive? Would they reproduce and cause infestation? Very unlikely, unless you are breeding a known pest species like German Cockroaches, American Cockroaches, etc.
Also if you live in warm climates like Florida or the tropics there is a good chance even the feeder species could cause an infestation. So be careful if you culture them![]()