I bought a cup of 100 dubias on Sunday. I've fed about 50 of them off. When I was feeding my beardie I accidentally dropped the cup. Dubias scattered around the floor. I think I picked up most of them, but I'm paranoid that they will run rampant in the house. How can I make sure none are left in the house?
Try setting a trap of sorts by putting up a heat lamp (ceramic heat emitter is probably best, they don't seem to enjoy light very much) and put out some bait like orange slices or a peeled banana. They are likely to be drawn to the warm area and food source.
In addition to what Cooper said, you probably don't have to worry about the roaches infesting, unless you live south of Florida. They are tropical roaches and need specific requirements to reproduce. Most places are too cool and dry. You're more likely to find them dead in a few weeks. I'd definitely go with the trap, as suggested.