hi, I'm not very active on this list, as I am busy with schoolwork (im 13) but I can suggest some places to look and traps to try as my recently deceased gerbil (pepper) was a little escape artist. try under the bed, behind cupboards, in the little gap underneath the last drawer in a chest of drawers (pull the bottom drawer out and there is a little space underneath) underneath tv/hifi cabinets and any other gaps. To catch them, a bin on its side with food in is good, as soon as they go in to get the food, tip the bin the right way up! or get a cardboard tube and put food in it, and when they go in, put your hands at both ends and they are trapped! Thought it might help, Charlie