My last hatch found me almost in tears after grand daughter played with temp control and fried my eggs. I left them in there to make sure none hatched. Day 20 I threw them out. Convinced to do better with the next hatch I took a couple of days tinkering around and added a fan, sponges, etc to my 'bator. I am now on day 16 of my incubaton of the lil quail. Wish me luck... we'll see if I killed this batch!