I let mine outside (not so much lately....due to the rain....)...but i always am at the back of the house pottering around. Its not like i would go to the front of the hosue and vacumn the car or something whilst they are out the back...

In summer i tend to go out there when they are out there. We live on the back of a reserve and my fear is a brown snake or spider will slither/crawl up beside them....