Kaytee Tropical Fiddle Sticks Hideout, Medium (2 Pack)

What is used to color the wood? A pet rat would chew on it and I would like it to be free of chemical dyes

What type of wood is this made of?

Can it actually be molded & used as a ladder?I have a cage I want to put on top of my current cage & I need a ladder to allow them to get up.

There isn't a clear answer about whether this is okay or not for chinchillas. Is it, or is it not?