I hatched 10 out of 12 eggs without turning them at all, not even once. Why? You ask??? I had bought eggs from 3 different people, by the time they arrived including the extras they sent, my bator was full. My egg turner holds 42 eggs, so I really had no room left for the last 12, so I figured instead of tossing and wasteing them, I would just set them in an egg carton wedged where ever I could find room in the incubator. I figured it was worth a try and it worked out pretty well. The lesson to be learned here is: Never count your eggs before you receive them, due to the wonderful generosity of these 3 sellers sending me lots of extras, I almost had to waste a dozen eggs.