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Is there any way to tell how long one should sun bleach bones to preserve them?

Asked by bluejay (1009points) September 4th, 2012

Okay I’ve read that bones need to be sun bleached for one year to get rid of all the grease, but when I found this raccoon skeleton it had already started bleaching, so is there any way to tell how much longer it needs to sun bleach for? Also would it hurt it to bleach for more than a year?

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