Yeah, I just used the shelf liner at lockdown and it worked fine.I don't personally use the liner prior to lockdown but others have and I have heard both scenarios where it had zero impact on their hatch other than a line around the egg where the liner rubbed off some of the bloom and I've also heard horror stories of it getting terribly bunched up and jamming the turner. Some choose to do it anyway but since I have zero issues not using it until lockdown, I don't see a reason to change my methods, lol.