I dry incubate in the Styros
We have such a high humidity level in the air naturally that if I don't incubate totally dry in a styro I end up with a huge amount of sticky chicks. Sticky chick is different than shrink wrapped. Sticky chick is as Yinepu describe a horrible stickiness that will even stick to your hands if you try to save the chick. It doesn't wash off and is a nightmare and it is caused by too much humidity during incubation. Shrink wrapped is a chick that will get stuck in it's shell at hatching because the hatching humidity is too low. If you have too high of humidity during incubation you can put a bowl of uncooked dry rice in the incubator and it will absorb the extra humidity. Just stir it now and then. There is a thread on here - BYC - that shows the egg when candled and what the air cell looks like in a good incubation. If your air cell is too small toward the end of the incubation you will end up with sticky chick or little glue heads as I call them