I ordered multiple cat trees.  One had a slight odor, that has finally almost gone away (a month later), but one had such a strong chemical contamination that it made me sick.  I didnt realize at first what was making me ill, a horrific sinus headache to the point that I could barely stand to move my head, until I realized I keep getting worse everytime I was in the room where the cat tree was.  When I realized what was making me ill, I moved the cat tree out into the sunlight and fresh air for three days to air out.  It didnt make any difference.  I moved it into our large shop to get it out of the weather, while it continued to air out, but it is still about the same.  I dont know if well ever be able to use it.  I would not let a cat climb or lie on it, as it cannot be healthy for them.  And since the product is from China, there is no telling how dangerous the chemical is that keeps showing up on the product.  I could not recommend buying this brand.