My furkids have two connectible playpens from theferretstore.com. Initially I ordered one, but knowing my grandferrets were coming for a long visit, I decided to buy two in order to accomodate all seven ferts. Before ordering the 2nd playpen I contacted theferretstore's customer service department and was very pleased with the cheerful cooperation the rep offered me. I mentioned to the rep that my grandferts were arriving on a Saturday. I did not expect special shipping treatment, since the shipping was free and Saturday deliveries cost extra. The first playpen arrived by FedEx just before my extra kids joined us for their 'vacation' at grandmas. Yes, it is possible for some of your ferrets to scramble over the top and escape the confines of the playpen. This can be remedied by slitting small diameter pvc pipe vertically and placing it over the top playpen bars. Also, when using the playpen outdoors, putting a tarp underneath will prevent your ferts from 'digging to China' to escape and also will help prevent fleas and other lawn critters from infesting your babies. I hope this helps you. Cordially, Greta Hoisington [Posted in FML issue 4289]