Hi, we got 3 little guinea pigs at the weekend, that are adorable and living in a hutch outside. All well so far, however when I bought and erected a wire run for them to have a scamper about in they duly escaped. They poked their little heads out and scampered. Luckily my dd and I were doing it together and spotted the escapee. This is a wire cage, big enough for three grown guineas, so lots of room, but obviously the space between the bars is still too wide for them. At what age should I put them in a run, or is this the wrong type of run? Any advice welcomed. Thank you.