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Butterfly Specimens Disintegrating in Frame: Dermestid Beetle Infestation, Freeze Treatment

Framed dried butterflies returned months later disintegrating. Likely dermestid beetles (carpet beetles). Expert recommends freezing the sealed frame for several days to kill all beetle stages. No mothballs needed.

Follow-Up

Frame is apart; expert says assemble, seal, freeze. Dermestids won't damage mounting board. Mothballs too toxic, freezing alone works. Resource: Mothball info.

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