[Aertyn]

As long as you air the bedding out before use it should be fine. Kiln Dried Pine should only be used in open cages with good ventilation. I empty out the bag into two large plastic containers and mix it around once a day before I use it in the cage. When it's in the cage I cover it in a layer of cat litter (similar to Carefresh) so the pigs rarely come into direct contact with it.

Unfortunately in Australia we really don't have as many options when it comes to bedding so we have to be a bit inventive.