I use marine carpet in 2 of my BP enclosures and use unprinted newspaper for the others and I like both of them for seperate reasons. I can't see how the marine carpet would be an issue unless it was deteriorating or somehow ingested which by that point I would have replaced it. I prefer the marine carpet to the reptile one because it can be thoroughly cleaned and rinsed off much better, which is probably due to the way it's made with larger spacing between weaving.