My 13-year-old yelling, "MOM! My gerbils got out last night and I can't get them out from under my bed. Can you help me?" She has a queen size bed with a bed skirt. I was laughing so hard watching them run from side to side while we would try and catch them from under there. After about a good 20 minute effort, I told her she was on her own cause I had things to do. She did manage to catch them with her little sister's help. What is a gerbils shelf life, 2 years?