Usually i purchase new however ceder... ic did an excellent job of explaining the certified difference. (cars.com)
but even so, pressure treated lumber around and close to our little ones, both those with and without fur, isn't a good idea.I know it is more costly but red ceder might have been a wiser choice?? (frysauceandgrits.com)
All cages should be lined with newspaper and wood shaving (avoid using ceder shavings). (petsmagazine.com.sg)