We purchased one of the Ferret Playpens and haven't had any problems with escapees. We got it to use when we traveled and stayed in hotels as it gives plenty of space to play, yet keeps the fuzzies contained so they won't come to any harm---such as crawling into the bedsprings, finding an escape hole or possibly coming across something that may have been dropped by previous residents and not cleaned/picked up such as medicines or other hazards. One thing to keep in mind when using it is not to have anything that they can use as a "ladder" to get over the sides. We either set their travel carrier in the middle or after laying a sheet down, would put the contents of the carrier---sleep covers, littler box, toys, food/water etc. out within the pen. They enjoyed the freedom and we had a lot easier time keeping track of them after a long day of traveling! All the best to fuzzies everywhere [Posted in FML issue 4108]