Personally I use Aspen or Newspaper. On the other hand, I've known some people who have been breeding snakes for decades that use pine. I think the 'Toxicity of pine' has been overblown. I guess it kind of makes sense, pine resin contains terpenes and other aromatic resins that could be bad in their concentrated form, but I don't know a single study proving that pine shavings are bad for snakes or even rodents.
