Quote Originally Posted by DrDooLittle View Post
Personally I wouldn't put any wood in mine. You have to be careful that from humidity, and poops/pees that may get on it, that stuff doesn't start growing on it. You may have gone through a lot of work to get it ready, and may have to take it out in a bit because its moldy or nasty. Just my opinion.

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Very very few people use wood free enclosures. Substrates paper products there are very few other options. I willow is fine it is a great wood. I would just use a soap and scrub brush and bake it for 20-30 min after perhaps spray it down after baking with a good disinfectant. As it is from a local tree it is easy to prep a few branches and replace then if they became soiled visibly.