I looked it up and there's 2 different kinds.. One that is straw, and another that is plastic. Which one do you use? If it's the straw kind, are they easily torn up by scratching?We had the same problem with our girls pulling all of the straw out of the boxes. My husband found nesting pads on Amazon (10 pk) they fit like a glove and now we do not have anymore broken eggs.
We placed loose straw on top so they have something to scratch and move around.
https://www.amazon.com/Precision-Pe...8&qid=1506085544&sr=8-4&keywords=nesting+pads
https://www.amazon.com/WASHABLE-NES...8&qid=1506085544&sr=8-5&keywords=nesting+pads