In another article we discussed the need to allow your chinchilla to bathe. However, we didn't mention specifics on dust bath options which we'll do here.
Super Pet Chinchilla Bath House
The first bath house that we purchased was from Super Pet (see image below). It functions as specified by the manufacturer except we never felt comfortable with the hook mechanism for attaching it to a cage. Instead, we just placed it at the bottom of our cage. Our chinchillas seemed to like it and being plastic it was easy to clean.
If we could, we would get the manufacturer to make a non-colored version of this product. We'd also get them to make the plastic smooth so we'd have a better view of our chinchillas rolling around in the dust.

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I use that one and I hooked it with those hook thingies and be sure it works great. When my chins are not sleeping in it at least one of them is on top of it snoozing away
http://i70.photobucket.com/albums/i94/robotzik/ottoandpandora014.jpg
Proof it works fine
Though yeah I wish I could see better inside.