Shouldn't be anything to worry about.


As to eating f/t I believe many times the issue is the feeder is not being presented warm enough. Mice have a body temp just over 100F so the f/t feeder needs to reflect a similar heat signature.

I use water out of the tap as hot as it comes. I get them over 100F so by the time I offer it even if it drops a bit it is still over 100F.