Hi All, I took advantage of the 50% off special on Suro20. It's here and set up but for the "evaporator pad". No explanation in manual of how or why it's used, if it stays in until lockdown or through hatch. Only mentions cutting it, folding it and clipping it into egg tray. I'm planning on setting eggs Sat. 1/16 (tomorrow) and want to have everything right. As always I appreciate your advice. Thanks.