Question

[Skiploder]

Well, if you plan on feeding the mice to the snake then that would be bad because the mice would have the toxins from the oil on their body and that could be easily passed in the snake once the snake has eaten it which would be even worse since the snake swallowed the oil from the pine that was once on the rodent. I'm not so sure if it's bad for the mice, but I'm guessing it would be since the mice would have the oil from the pine on it's body.

The "guesses" aren't helping the OP - the info on IBD is incorrect (IBD has been transmitted in collections that are mite free) as is the assumption about the snake ingesting "oils" from the pine on the rodents.

The toxicity caused by phenols is not that acute and the amount given off or ingested from a even a year's worth of feeders kept on them would be minute. Much of the data about phenols is extrapolated from its effect on small mammals that have been housed directly on highly aromatic shavings.

Before the negative effects of phenols became well known, not only did many reptiles live right on cedar and pine substrates but regularly ingested mice housed on the same substrates for years.

The effect on their health was chronic in nature even with this high level of long term exposure. In other words - your python's risk from this one exposure is negligible.

There are several things that can cause neurological symptoms in snakes:

(1) Excessive high or low temperatures
(2) Viral infections
(3) Genetic neurological defects
(4) Bacterial infections
(5) Parasites
(6) Exposure to toxins