It's important but not life-threatening so you can calm down

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Dust baths are how degus stay clean since they can't be bathed in water. You can buy "Chinchilla dust" or "Chinchilla sand" at a pet store--they might also be called things like "dust bath" or "sand bath".
You put some in a container or shallow dish and the degus will roll around in it to clean off. It's pretty hilarious to watch, in fact

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Here's an example of what I mean:
http://www.petco.com/product/7846/Su...t=OnSiteSearch
And this is an example of a container sold specifically to hold the dust bath:
http://www.petco.com/product/7479/Su...t=OnSiteSearch
You should offer your degus a dust bath at least once a week. Some people just leave it in constantly, it's really up to you. I don't leave it in 24-7 because my degus find it amusing to dump it out of the cage when they're done

. Also keep in mind that if you leave it in there a lot you'll need to change the dust bath on a regular basis because degus have a tendency to go to the bathroom in their dust baths once they're done bathing. In fact, the easiest way to litterbox train a
degu is to just use bath sand in the litterbox

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