Quote Originally Posted by Freakie_frog View Post
No worries.

P/K = Prekilled i.e a rat you purchase like dispatch yourself then feed off
F/T - Frozen Thawed.

It's possible that either the rodents are expired, freezer burned, or not completely thawed out and warm all the way through. Barring any other health issue like a substrate impaction or GI trac issue then I'd look to the feeder. Assuming that the temperatures are still with in the proper range. Heat mats and elements have been known to slowly go bad and thus allowing the temps to drop or spike at times thus causing a regurge.
Thank you so much for your help and advice! We had been getting our rats from a large pet chain store but 2 weeks ago thought we would try out and support a newly opened reptile store near by, could be a coincidence but from what you have said maybe they have sold us bad rats, or, I am not sure what 'freezer burned' means but sounds like that could be my fault not the store. Does it matter where in the freezer they are stored? Will switch back to our original supplier and give that a go tomorrow. My son thaws the rats all day so I am pretty confident they are completely thawed. Will also keep checking the heat mat temps throughout the day. Thanks once again