My sister bought a Genesis Hovabator. She is having problems with it keeping the humidity high enough. The problem didn't start until after her first batch, but since then she has noticed that the humidity drops quickly. She went to bed last night with it at 55% and woke up this morning to it being 25%. Does anyone know what she's doing wrong or what she can do to correct this? Also, about once a week a bull snake gets into the cages with the quail and will kill a couple. If you live out in the country, how do you keep the snakes away?