RSbunny- Well they are trained to come to their name so if I want to know where one of them is I just call em' and they come out of where ever they were. Then when it's time to put them up I say 'wanna treat'and they come runnin so I put them in there cage and give them a treat! Now we also shut all the doors to the bedrooms and bathroom, so they only have run over the living room, kitchen, and hallway.
We haven't had any cord chewing either but they just want to be with us they want to crawl all over you and wrestle with your fingers. But we also got them when they were very young, and we have been very social with them so it's like being a part of their rat family.
Cuda- I wouldn't say they are easier to take care of, I would say there is actually more that goes into their care. For example- they have a higher metabolism to keep their body heat up so they eat more. They also need a warm place to sleep and a fleece cover of some sort, with no drafts. If they get cold and stay cold they will get sick so that is a main concern of mine with us going into winter. They also make pretty bad moms so I would never breed them. They say that you have better chances of a 'naked'rat being a better mom than you do a true hairless but it's still a good idea to have a surrogate ratty mom just in case.
I'm not going to breed them anyway, I'm afraid they would lose they're puppyness (is that even a word? you know what I mean, their innocence).