I have 22 hens about 22 weeks old, and 5 nest boxes in my coop. After reading several areas in this forum I have added a base (about 2") of shavings and put about 4" of hay over that and placed a golf ball or two in each nest box. Most of my eggs (I am getting about 9 a day) are in the nest boxes sometimes I find one or two in the corner but my question is: Do you keep the golf balls in the nest boxes until all 22 hens are laying? or do I remove them? or do they stay in the boxes forever?