We had a couple (male/female pair) of peppered roaches that we obtained at a local entomology event - the first species we tried, and they have been great. The female became an adult a couple of months ago, and escaped about 5 weeks ago - I adjusted one branch to be about 3" from the top of their brand-new unlidded terrarium and apparently that was enough leeway for her to get out. In despair, I ordered a colony starter kit from roachcrossing.com, and that has been going well so far. I also built a lid...
Tonight, my wife was rather shocked to see the female on its back in the laundry room. I guess it had fallen and was either too malnourished/dehydrated (we live in the north and the heating makes for dry winters indoors) or possibly injured, to flip over, which is difficult even for a healthy roach on a flat surface. In fact, I thought it was dead unti I touched it. I gave it a quick warm rinse and put it in the enclosure. It will move around a bit, but it is extremely clumsy and weak; if I put it briefly on its back, it will show no interest in getting up, and it isn't quick to grab on to a side of tree bark if you put it in front of the roach like a normal roach would be - instead it will likely fall to the bottom.
I also haven't seen any signs that it is interested in food (apple or fish flakes). Any suggestions on what I might do to revitalize it? Add sugar or juice to the water for a day perhaps?